A lidar transceiver device for achieving a full vertical field of view, and a usage method. A fixing frame (7) is arranged on a base (6); a multi-core optical fiber array (1), a rotating silicon wafer (2) and a biconvex aspherical lens (3) are sequentially arranged on the fixing frame (7); and the focal point of the biconvex aspherical lens (3) falls on a rotating mirror (4), such that the multi-core optical fiber array (1), the rotating silicon wafer (2), the biconvex aspherical lens (3) and the rotating mirror (4) are sequentially arranged along an optical path. An optical signal emitted by the multi-core optical fiber array (1) reaches the biconvex aspherical lens (3) after passing through the rotating silicon wafer (2); the rotating silicon wafer (2) is configured to adjust the angular displacement of the optical signal in the vertical direction, and the angular displacement of the optical signal in the horizontal direction is adjusted by the rotating mirror (4); and the rotating mirror (4) reflects the focused optical signal to a target object (5), and the optical signal is reflected back to the multi-core optical fiber array (1) along the original optical path after reaching the target object (5), thereby realizing the scanning of the target object (5) in the vertical direction and the horizontal direction.
The present invention relates to the technical field of optics, and in particular to a method for controlling the output frequency of a wavelength selective switch, and a wavelength selective switch. In the present invention, the method comprises: acquiring a shared pixel column between adjacent first and second channels on a wavelength distribution diagram of an LCOS chip; calculating a first ratio of the first channel occupying the shared pixel column, and a second ratio of the second channel occupying the shared pixel column; and finally, allocating pixels in the shared pixel column to the first channel and the second channel respectively on the basis of the first ratio and the second ratio. The bandwidths of the first channel and the second channel can be balanced, and the two channels each obtain a required bandwidth while sharing the pixels. Existing frequency adjustment precision is approximately 6.25 GHz, while the frequency adjustment precision of the present solution can reach 0.5 GHz, thereby achieving more precise frequency adjustment and reducing noise and distortion in signals. Even when an external environment changes, precise frequency control can be maintained, thereby significantly improving system stability.
The present invention relates to the technical field of optical communications and particularly relates to a method for implementing a signal-to-noise ratio reporting function based on a CDR solution, and an optical module. In the present invention, eye diagram data is obtained by means of scanning data in a communication link, and after the eye diagram data is processed, the average value thereof is obtained, so as to obtain a signal-to-noise ratio value to be reported, thereby achieving SNR reporting of the optical module based on the CDR solution, effectively improving the accuracy and stability of the SNR reporting, enabling the optical module based on the CDR solution to also effectively measure the link SNR indicator health status, and providing an effective test method and means for testing the chromatic dispersion of the optical module, investigating the influence of temperature and MPI on the SNR, and the like. In addition, a bit error rate can also be reduced by guiding the configuration of FEC correction and equalization compensation, thereby improving the quality of signal transmission.
H04B 10/079 - Dispositions pour la surveillance ou le test de systèmes de transmissionDispositions pour la mesure des défauts de systèmes de transmission utilisant un signal en service utilisant des mesures du signal de données
4.
CROSSTALK SUPPRESSION METHOD FOR WAVELENGTH-SELECTIVE SWITCH, AND WAVELENGTH-SELECTIVE SWITCH
The present invention relates to the technical field of optical communications, and in particular, relates to a crosstalk suppression method for a wavelength-selective switch, and a wavelength-selective switch. The method comprises: acquiring a light spot center of incident light on several pixel points on an LCOS chip; on the basis of the position of the light spot center, calculating a phase modulation amount that needs to be superimposed on each pixel point; and superimposing the phase modulation amount on an initial phase of the pixel point. By superimposing a phase modulation amount on an initial phase of each pixel point, the present invention adjusts the phase of an LCOS chip without the need for adding other elements to a WSS optical path, so as to compensate for an aberration of the WSS optical path, implement a port switching function of a WSS module, suppress crosstalk between adjacent output ports, and optimize the insertion loss of the output ports, thereby effectively improving the indexes and performance of the WSS module.
The present invention relates to the technical field of fiber management trays, and provides a fiber management tray having a fiber management intermediate layer heating function and an assembly method therefor. The fiber management tray comprises a fiber management tray body, a thermally conductive metal shell, a bottom heater, a fiber management assembly, a top heater, a thermally conductive metal cover plate, and a fiber management tray cover. The fiber management assembly comprises at least one thermally conductive piece and at least two fiber management sub-members. Specifically, the thermally conductive piece is arranged between the two fiber management sub-members, and an intermediate layer heater is arranged adjacent to preset fiber management sub-members. In the present invention, a cross multi-layer stacked structure in which the fiber management sub-members are combined with the thermally conductive materials is used, thereby achieving low costs, easy processing, good maintainability, high temperature uniformity, and high temperature accuracy.
A fiber coiling cartridge and an assembly method therefor. The fiber coiling cartridge comprises a fiber coiling cartridge body (1), a thermally conductive metal casing (2), a bottom heater (3), a fiber coiling assembly (4), a top heater (5), a thermally conductive metal cover plate (6), and a fiber coiling cartridge cover (7). The fiber coiling assembly (4) comprises at least one layer of a thermally conductive sheet (41) and at least two fiber coiling sub-components (42). Specifically, the thermally conductive sheet (41) is arranged between the two fiber coiling sub-components (42). The use of a cross-stacked multi-layered structure combining a fiber coiling sub-component (42) with a thermally conductive material results in low cost, easy processing, good maintainability, good temperature uniformity, and high temperature accuracy.
The present invention relates to the technical field of data communications, and provides an apparatus and method for rapid recovery from failures of some devices in an optical data switching or computing device cluster. A management device confirms the identifier m of a second-layer device that sends an alarm message; on the basis of a pre-established mapping relationship between the identifier m of the second-layer device and an optical path port Pm in each protection optical switch device, the management device controls an optical switch in each protection optical switch device in the protection optical switch array, such that a common port thereof is connected to the optical path port Pm, thereby replicating an optical signal, imported from a first-layer device library into the second-layer device m, to a second-layer redundant device by means of the optical switch in each protection optical switch device and an optical coupler m. In the present invention, when some devices fail, functions of the devices can be rapidly switched to a redundant device, thereby reducing failure recovery time and saving cluster device resources.
The present invention relates to the technical field of communications. Provided are a fast fault-state dummy-wave optical power filling apparatus and an optical wavelength division multiplexing transmission system. The apparatus comprises a dummy wave seed light source, an optical switch, a first optical power measurement unit, and a control unit, wherein the first optical power measurement unit is provided on a transmission path of a real optical signal; the dummy wave seed light source is used for generating a dummy optical signal; the first optical power measurement unit is used for measuring the optical power of the real optical signal; the control unit is used for controlling the switching of the optical switch on the basis of the optical power of the real optical signal; and when the real optical signal is abnormal, an output end of the optical switch is switched to be connected to a first input end of the optical switch, so as to transmit the dummy optical signal to an optical amplifier, thereby reducing the impact on other channels in a downstream multiplex section. By means of the present invention, when signal light is abnormal, the optical amplifier can still work normally, and the output optical power and flatness are essentially consistent with those in a normal service connection, thereby minimizing the impact on other wavebands and downstream optical transmission links.
The present invention relates to the technical field of optical communications, and particularly relates to a dual-receiver integrated TO optical assembly with vertical and horizontal hybrid packaging, and an optical module. The optical assembly comprises a TO base, a TO cap, a plurality of optical chips, and an optical refraction unit, wherein the plurality of optical chips and the optical refraction unit are fixedly mounted on the TO base; the TO base is provided with at least one mounting post, which is fixedly connected to the TO base, each mounting post has an optical chip fixedly mounted thereon, and optical chips are mounted on the surface of the TO base, the optical refraction unit being used for transmitting optical signals into each optical chip; and either a spherical lens or a flat window lens is mounted at the top center of the TO cap, the spherical lens being used for transmitting converging light to the optical refraction unit, and the flat window lens being used for transmitting parallel light to the optical refraction unit.
ACCELINK INFORMATION TECHNOLOGIES CO., LTD. (Chine)
Inventeur(s)
Xiao, Qingming
Wang, Zhen
Xiao, Li
He, Yingying
Liu, Ning
Wang, Min
Abrégé
The present invention relates to the technical field of optical communications, and in particular to a multi-beam array optical switch and a control method therefor. The multi-beam array optical switch provided by the present invention comprises a first array collimator, a rotating mirror assembly, and a second array collimator; an optical fiber array is arranged in each of the first array collimator and the second array collimator, and a plurality of array unit holes are formed in each optical fiber array; at least a first optical fiber and a second optical fiber are arranged in each array unit hole; a first optical signal and/or a second optical signal from a receiving and transmitting module of an input end data center are/is received by means of a double-optical-fiber structure; and by internally arranging an array lens assembly, which is equivalent to integrating the function of circulators in the array optical switch, the cost increase only involves adding an array lens assembly and changing the original single optical fiber into a double-core optical fiber, thereby reducing the complexity of the structure of the multi-beam array optical switch, and also saving the costs of thousands of circulators.
A wavelength selective switch apparatus with pre-tilt angle adjustment, and a method for using same. The apparatus comprises a optical transceiving end (1), a grating assembly (2), a deflection element (3), a phase grating (4) and an optical switching engine (5), which are sequentially arranged along a optical path, wherein an optical signal emitted by a transmitting end (11) in the optical transceiving end (1) is received by the grating assembly (2) and divided into a plurality of optical signals of different wavelengths, the optical signals of different wavelengths are transmitted to the phase grating (4) through the deflection element (3), and tilt angles of the optical signals of different wavelengths are changed by means of the deflection element (3), such that the optical signals of different wavelengths correspond to the same grating period; and the phase grating (4) on the optical switching engine (5) divides each of the optical signals of different wavelengths into diffracted light of different orders, and returns same to the optical transceiving end (1) along the optical path, wherein some diffracted light of a preset order is received by a corresponding receiving end (12) in the optical transceiving end (1). Since optical signals of different wavelengths correspond to the same grating period, diffracted light of the same order but different wavelengths converges, thereby preventing crosstalk caused by divergence of the diffracted light of the same order.
G02B 6/35 - Moyens de couplage optique comportant des moyens de commutation
G02B 6/293 - Moyens de couplage optique ayant des bus de données, c.-à-d. plusieurs guides d'ondes interconnectés et assurant un système bidirectionnel par nature en mélangeant et divisant les signaux avec des moyens de sélection de la longueur d'onde
12.
WAVELENGTH-TUNABLE NARROW-LINEWIDTH EXTERNAL-CAVITY SEMICONDUCTOR LASER AND OPTICAL MODULE
The present invention provides a wavelength-tunable narrow-linewidth external-cavity semiconductor laser and an optical module. The wavelength-tunable narrow-linewidth external-cavity semiconductor laser comprises a laser chip, a narrow-band filter, a semi-transparent reflector, and a collimating optical fiber that are sequentially arranged along an optical path; the narrow-band filter has a wide spectrum, and can select, from among original incident optical signals, optical signals having a wide wavelength range for transmission, thereby achieving a wide tuning range; additionally, by adjusting the angle of the narrow-band filter and the position thereof on the optical path, narrow-band light having a wavelength range comprising a central wavelength is obtained by screening; the semi-transparent reflector is provided with a transmission film and a reflection film, the reflection film reflects optical signals back to the laser chip to form a resonant cavity, and a narrow linewidth is achieved by means of a long resonant cavity; moreover, by adjusting the angle of the semi-transparent reflector, an optical signal of a specified wavelength is selected from the narrow-band light for lasing and emitted to the collimating optical fiber, thereby completing wavelength tuning on the basis of a narrow linewidth and a wide tuning range.
ACCELINK INFORMATION TECHNOLOGIES CO., LTD. (Chine)
Inventeur(s)
Xiao, Qingming
Wang, Zhen
Abrégé
The present invention relates to the technical field of optical communications, in particular to a monitoring device and a monitoring method for an array optical switch, and an array optical switch. In the present invention, a fist beam splitter receives a first optical signal from the outside, receives a test optical signal from a laser assembly when there is no external first optical signal input, divides the first optical signal or the test optical signal into a second optical signal and a third optical signal, inputs the second optical signal into an input end of the array optical switch, and transmits the third optical signal to a first monitoring assembly for monitoring the state of the input end of the array optical switch; and the second splitter divides the second optical signal into a fourth optical signal and a fifth optical signal, transmits the fourth optical signal to a transceiver module of a data center at an output end, and transmits the fifth optical signal to the second monitoring assembly for monitoring the state of the output end of the array optical switch. The present invention saves the cost of thousands of PDs, and can adaptively complete monitoring of the state of the array optical switch without completely depending on external optical signals.
H04B 10/079 - Dispositions pour la surveillance ou le test de systèmes de transmissionDispositions pour la mesure des défauts de systèmes de transmission utilisant un signal en service utilisant des mesures du signal de données
14.
BATCH REROUTING METHOD, APPARATUS AND SYSTEM FOR MESH WHITE-BOX OPTICAL NETWORK
ACCELINK INFORMATION TECHNOLOGIES CO., LTD. (Chine)
Inventeur(s)
Lu, Gang
Xiao, Li
Xu, Jian
Yu, Jiekui
Abrégé
The present invention relates to the technical field of communications, and provides a batch rerouting method, apparatus and system for a MESH white-box optical network. The method comprises: acquiring original paths to be deleted and/or rerouting paths to be added; on the basis of the original paths and/or the rerouting paths, determining channel services that need to be executed by WSS devices; dividing all the channel services into one or more task groups on the basis of the WSS configuration status, wherein channel services of a plurality of WSS devices associated with each other are divided into different task groups, and channel services of a plurality of WSS devices that are not associated with each other are divided into the same task group; and sequentially issuing the task groups, so that each WSS device executes the channel services in the task groups to implement batch rerouting. In the present invention, a plurality of WSS devices associated with each other are divided into different task groups, and a plurality of WSS devices that are not associated with each other are divided into the same task group, thereby avoiding congestion and ensuring rapid completion of rerouting.
The present invention provides an MPO-MT adapter and an optical module. The MPO-MT adapter comprises a first mating member and a second mating member, wherein the first mating member is configured to accommodate an MT connector, and the second mating member is configured to accommodate an MPO connector, or the first mating member is configured to accommodate an MPO connector, and the second mating member is configured to accommodate an MT connector; two sides of the first mating member are each provided with a locking member, the second mating member is provided with a limiting wall, two sides of the limiting wall are each provided with a groove, and one end of each through groove is provided with a ribbed platform; when the first mating member and the second mating member are connected to and mated with each other, the locking member is inserted into the interior of the limiting wall and fitted to the ribbed platform on the corresponding side, so as to realize the connection between the MPO connector and the MT connector; and an unlocking member is configured to press the locking member inward under the action of an external force to release the locking between the locking member and the ribbed platform, so as to achieve the unlocking between the first mating member and the second mating member. By means of the device which has a stable structure and is easy to disassemble, the connection and unlocking between the MPO connector and the MT connector are achieved.
ACCELINK INFORMATION TECHNOLOGIES CO., LTD. (Chine)
Inventeur(s)
Fu, Chengpeng
Yang, Shengli
Tao, Jintao
Le, Menghui
Zhang, Cuihong
Yu, Chunping
Abrégé
The present invention relates to the technical field of communications, and provides a Raman amplifier gain control method and a Raman optical fiber amplifier. The method comprises: inputting pump light of a corresponding wavelength into an optical fiber, and measuring out-of-band ASE power of the optical fiber in each preset frequency band; determining an actual gain coefficient of each preset frequency band on the basis of the out-of-band ASE power of each preset frequency band; matching the actual gain coefficient of each preset frequency band with a preset Raman gain coefficient of each preset frequency band, using an optical fiber corresponding to an actual gain coefficient having the highest similarity obtained by means of matching as a first optical fiber, and using an adjustment parameter of the first optical fiber to perform gain control of a Raman amplifier. The present invention, by means of deriving a Raman gain coefficient in reverse by using the out-of-band ASE power, can measure the Raman gain coefficient during the working process of the Raman amplifier, resolving the problem of it being difficult for a distributed amplifier to acquire a gain coefficient of optical fiber.
H04B 10/079 - Dispositions pour la surveillance ou le test de systèmes de transmissionDispositions pour la mesure des défauts de systèmes de transmission utilisant un signal en service utilisant des mesures du signal de données
H04B 10/2537 - Dispositions spécifiques à la transmission par fibres pour réduire ou éliminer la distorsion ou la dispersion due à des procédés de diffusion, p. ex. diffusion par effet Raman ou Brillouin
17.
EASY-TO-ASSEMBLE OPTICAL MODULE AND USE METHOD THEREOF
The present invention relates to the technical field of optical communications, and in particular to an easy-to-assemble optical module and a use method thereof. The optical module comprises: a packaging housing and a pull member. The pull member comprises fixing arms respectively machined and arranged on two sides, and the fixing arms abut against the two sides of the packaging housing; the packaging housing comprises an upper cover, a base, and a cover plate, the upper cover is fixedly connected to the base, and the cover plate is snap-fitted to the base; the base is provided with a first fixing plane, and a fixing protrusion is machined on the first fixing plane; the pull member is provided with a second fixing plane, the second fixing plane is located between the fixing arms, the second fixing plane is provided with a fixing hole, and the fixing hole is fitted over the fixing protrusion; the cover plate covers the second fixing plane, and the cover plate is snap-fitted and fixed to the base; a torsion spring is provided between the cover plate and the second fixing plane, and the torsion spring is fitted over the fixing protrusion; and hooks are provided on two sides of the torsion spring, two retaining protrusions are provided on the second fixing plane of the pull member, and the retaining protrusions are respectively located on two sides of the fixing hole.
ACCELINK INFORMATION TECHNOLOGIES CO., LTD. (Chine)
Inventeur(s)
Fu, Chengpeng
Tao, Jintao
Jia, Yuanyuan
Lei, Rui
Fang, Di
Le, Menghui
Bu, Qinlian
Abrégé
The present invention relates to the technical field of communications, and provides a low-noise full-band fiber amplifier and a signal transmission system. The low-noise full-band fiber amplifier comprises a first wavelength division multiplexing component, a wavelength combining component, a first gain module, and a second gain module. The first wavelength division multiplexing component demultiplexes a full-band optical signal to obtain a first half-band optical signal and a second half-band optical signal. The first gain module performs forward doped fiber amplification and backward Raman amplification on the first half-band optical signal to obtain a first half-band gain signal; and the second gain module performs forward doped fiber amplification and backward Raman amplification on the second half-band optical signal to obtain a second half-band gain signal. The wavelength combining component multiplexes the first half-band gain signal and the second half-band gain signal to obtain a full-band gain signal. In the present invention, the entire band is divided into two major bands, and the two major bands are amplified respectively to equalize insertion losses of sub-bands; and by introducing backward Raman amplification, the low-noise full-band fiber amplifier is realized, and the backward Raman amplification is used to facilitate subsequent signal demodulation.
ACCELINK INFORMATION TECHNOLOGIES CO., LTD. (Chine)
Inventeur(s)
Du, Gang
Deng, Fuxing
Abrégé
The present invention relates to the technical field of communications, and provides a fiber amplifier for diverting pump leakage light, and a signal transmission system. The amplifier comprises N-stage erbium-doped fiber amplification stages, a first pump component, a first wavelength division multiplexing component, and a coupling component. A common port of the first wavelength division multiplexing component is connected to a signal output port of a diverting erbium-doped fiber amplification stage for the purpose of demultiplexing to obtain signal light and pump leakage light. A reflective port of the first wavelength division multiplexing component is connected to a first input port of the coupling component. Each output port of the coupling component is connected to a pump input port of a corresponding erbium-doped fiber amplification stage. The coupling component is configured to couple and transmit the pump light and the pump leakage light to the pump input ports of the corresponding erbium fiber amplification stages. The present invention uses the wavelength division multiplexing component and the coupling component to input the pump leakage light from the diverting erbium-doped fiber amplification stage into the corresponding erbium fiber amplification stages, thereby achieving pump-light reuse and effectively improving the noise figure and output power of the EDFA.
The present invention relates to the technical field of optical communications, and in particular, to an in-vehicle optoelectronic mixer and a method for using same. The in-vehicle optoelectronic mixer comprises a male connector and a female connector, wherein the male connector comprises a first housing sleeve, a first power transmission assembly, a first ferrule assembly, and a pair of male electrodes respectively arranged on both sides of the first ferrule assembly; the first power transmission assembly comprises a rotating housing and an electric terminal pair fixed to the rotating housing; the electric terminal pair comprises a positive electrode electric terminal and a negative electrode electric terminal, and the tail parts of the pair of male electrodes respectively abut against the positive electrode electric terminal and the negative electrode electric terminal to realize electrical connection; the first power transmission assembly of the male connector is configured to be rotatable, and the rotating housing is rotated to drive the first power transmission assembly to rotate integrally, so that the purpose of conveniently exchanging the polarity of a connector is achieved without disassembling the connector, thereby rapidly performing on-off operations on the connector.
The present invention relates to the technical field of optical communications, and in particular to a vehicle-mounted optoelectronic hybrid connector, comprising: a BOSA device, an adapter assembly, a male connector, and a PCB daughter board. The adapter assembly comprises an adapter unit, female conductive terminals, and an adapter housing; the BOSA device is snap-fitted in the adapter unit and is limited by the adapter unit, and the adapter housing is fixedly connected to the PCB daughter board; first accommodating slots are formed in the adapter unit, the female conductive terminals are accommodated in the first accommodating slots, and the adapter unit is mounted on one end surface of the adapter housing; and the BOSA device and the female conductive terminals are respectively electrically connected to the PCB daughter board. The male connector comprises a connector housing, a male ferrule assembly, and male conductive terminals, and the connector housing is coupled with the adapter housing, for achieving coupling between the male ferrule assembly and a ferrule assembly of the BOSA device, and electrical connection between each male conductive terminal and the corresponding female conductive terminal.
The present invention relates to the technical field of optical communications, and in particular to an optical module using an embedded LDD and an optical device, and a light-emission rate conversion method therefor. The optical module comprises: a circuit board and at least one BOSA optical device, wherein the BOSA optical device is connected to the circuit board; a control unit is provided in the circuit board; the BOSA optical device comprises a laser diode driver, a laser emitting unit and an optical transceiver unit; and the laser diode driver and the laser emitting unit are configured to control a transmission rate supported by the BOSA optical device. In the present invention, light of two different transmission powers can be output by means of one circuit board and one or two BOSA optical devices. Moreover, in the present invention, a laser diode driver is provided in a BOSA optical device, which saves on the area of a circuit board and reduces the types of PCBs, thereby enabling the implementation of a 25G/50G PON ONU optical module of an SFP package.
The present invention relates to the technical field of optical communications, in particular to an SOA-PIN with a narrow wavelength interval and a manufacturing method therefor. The manufacturing method comprises: with an SOA chip as a boundary, dividing an optical path into a front optical path and a rear optical path; during coupling of an SOA-PIN, first establishing the front optical path and then establishing the rear optical path; establishing the front optical path on the basis of a reverse bias feature of the SOA chip, the front optical path comprising a first collimating lens, an isolator, a second collimating lens and an optical port which are sequentially arranged; and establishing the rear optical path on the basis of a forward bias feature of the SOA chip, the rear optical path comprising a third collimating lens, a filter, a fourth collimating lens and a PIN chip which are sequentially arranged. The present invention can consider requirements on both the yield and the increasingly dense signal wavelength.
The present invention relates to the technical field of optical communications, in particular to a method and apparatus for adaptive amplification of optical fiber dispersion compensation. The method comprises: acquiring a dispersion compensation value of a dispersion compensation module; on the basis of the dispersion compensation value, reallocating the total gain of the dispersion compensation module to a plurality of optical fiber amplifiers; on the basis of the re-allocated gain of each optical fiber amplifier, calculating a first expected attenuation value of a variable optical attenuator arranged in each optical fiber amplifier, on the basis of the dispersion compensation value, calculating the attenuation compensation amount of each variable optical attenuator, and, on the basis of the first expected attenuation value and the attenuation compensation amount, calculating a second expected attenuation value; on the basis of the detection power of a first input end and the detection power of a first output end of each variable optical attenuator, calculating an actual attenuation value; and comparing the actual attenuation value with the second expected attenuation value, if the actual attenuation value is consistent with the second expected attenuation value, stopping adjusting the variable optical attenuator, otherwise, continuing to adjust same.
H04B 10/2525 - Dispositions spécifiques à la transmission par fibres pour réduire ou éliminer la distorsion ou la dispersion due à la dispersion chromatique en utilisant des fibres à compensation de dispersion
25.
AUTOMATIC EDFA SIGNAL POWER CONTROL METHOD AND APPARATUS BASED ON REAL-TIME ASE COMPENSATION
The present invention provides an automatic EDFA signal power control method and apparatus based on real-time ASE compensation. Target output signal power is set; when input optical power fluctuates, a real-time gain is obtained on the basis of the target output signal power and real-time input optical power; corresponding ASE power is obtained by means of the real-time gain, and the target output signal power and the ASE power are added to obtain expected total output power; and when current real-time total output power is adjusted to be the expected total output power, it can be ensured that output signal power in the real-time total output power is locked as the target output signal power while the current ASE power is compatible, thereby ensuring that the output signal power of a fiber amplifier is not affected by the fluctuations of the input optical power.
A thin film lithium niobate polarizer and a manufacturing method therefor. The thin film lithium niobate polarizer comprises a substrate layer, an optical waveguide layer and an upper cladding layer; the optical waveguide layer comprises a light input port, a light output port, a slab layer and a ridge waveguide layer, the ridge waveguide layer being disposed on the slab layer; the ridge waveguide layer comprises at least one transmission waveguide section, and two ends of the transmission waveguide section are symmetrically connected with connecting waveguide sections; and the transmission waveguide section is used to filter light in a TM mode in a laser signal, and output light in a TE mode in the laser signal by means of the connecting waveguide section at the other end and the light output port, achieving separation of TM and TE components in the input laser signal, to obtain pure TE light, and thereby achieve a polarizing effect. In addition, using a thin film lithium niobate platform helps to reduce the size of a device, facilitating device integration and chip miniaturization. A standard semiconductor process is used, and the process technology is mature, so that costs can be effectively reduced, and the batch production capacity of the device is improved.
G02B 6/126 - Guides de lumièreDétails de structure de dispositions comprenant des guides de lumière et d'autres éléments optiques, p. ex. des moyens de couplage du type guide d'ondes optiques du genre à circuit intégré utilisant des effets de polarisation
G02B 6/122 - Éléments optiques de base, p. ex. voies de guidage de la lumière
G02B 6/124 - Lentilles géodésiques ou réseaux intégrés
G02B 6/136 - Circuits optiques intégrés caractérisés par le procédé de fabrication par gravure
27.
OPTICAL TIME-DOMAIN REFLECTOMETER, AND METHOD FOR ELIMINATING INTERFERENCE FADING
The present invention relates to the technical field of optical fiber sensing, and particularly relates to an optical time-domain reflectometer, and a method for eliminating interference fading. The optical time-domain reflectometer comprises: a laser device, a frequency-division multiplexing modulator, a circulator and a signal processing apparatus, wherein the frequency-division multiplexing modulator comprises a first modulator, a second modulator, a first attenuator and a second attenuator; the laser device is used for generating a coherent light source, and the coherent light source sequentially passes through the first modulator and the first attenuator, so as to obtain a first pulsed light signal; the coherent light source sequentially passes through the first modulator and the second modulator, so as to obtain a second pulsed light signal; and the coherent light source sequentially passes through the second attenuator and the second modulator, so as to obtain a third pulsed light signal. Therefore, by means of different combinations of the first modulator, the second modulator, the first attenuator and the second attenuator, multiple pulsed light signals can be outputted; and compared with the prior art, hardware costs are saved.
G01H 9/00 - Mesure des vibrations mécaniques ou des ondes ultrasonores, sonores ou infrasonores en utilisant des moyens sensibles aux radiations, p. ex. des moyens optiques
H04B 10/071 - Dispositions pour la surveillance ou le test de systèmes de transmissionDispositions pour la mesure des défauts de systèmes de transmission utilisant un signal réfléchi, p. ex. utilisant des réflectomètres optiques temporels [OTDR]
G01D 5/353 - Moyens mécaniques pour le transfert de la grandeur de sortie d'un organe sensibleMoyens pour convertir la grandeur de sortie d'un organe sensible en une autre variable, lorsque la forme ou la nature de l'organe sensible n'imposent pas un moyen de conversion déterminéTransducteurs non spécialement adaptés à une variable particulière utilisant des moyens optiques, c.-à-d. utilisant de la lumière infrarouge, visible ou ultraviolette avec atténuation ou obturation complète ou partielle des rayons lumineux les rayons lumineux étant détectés par des cellules photo-électriques en modifiant les caractéristiques de transmission d'une fibre optique
28.
DIRECTION-CONTROLLABLE THREADED MOUNTING STRUCTURE AND MOUNTING METHOD THEREFOR
The present invention relates to the technical field of threaded mounting, and in particular to a direction-controllable threaded mounting structure and a mounting method therefor. The direction-controllable threaded mounting structure comprises a fixed assembly and a movable part, wherein the fixed assembly is mounted on a device, and the movable part is mounted on the fixed assembly; the fixed assembly comprises a fixing base, a nut, and an elastic body, wherein the nut and the elastic body are arranged in the fixing base; a snap-fit hole is formed in one end of the fixing base, bosses are provided on the movable part, and the snap-fit hole matches the bosses to control the mounting direction of the movable part; the movable part is used for being connected to a nut, and the movable part is continuously locked according to a preset locking direction, so that the nut slides in the fixing base; and when the bosses completely enter the snap-fit hole, the elastic body is used for resetting the nut, and the nut is used for pulling the movable part, so as to achieve locking of the movable part. The fixed assembly is mounted inside the device, so that mounting and dismounting can be completed outside the device; and the mounting direction of the movable part is controlled by setting the direction of the snap-fit hole, so that the movable part can be stabilized in a required direction.
F16B 39/28 - Blocage des vis, boulons ou écrous dans lequel le verrouillage se fait en même temps que le vissage ou le serrage par organes particuliers portés par l'écrou ou le boulon ou par la forme particulière de ceux-ci
29.
GLASS AND SILICON PHOTONICS HYBRID INTEGRATED STRUCTURE AND MANUFACTURING METHOD THEREFOR
A glass and silicon photonics hybrid integrated structure and a manufacturing method therefor. The structure comprises a glass conversion waveguide (1) and a silicon photonics chip (2); one side of the glass conversion waveguide (1) is provided with an input port (11), and the other side of the glass conversion waveguide (1) is provided with a first light-splitting port (12) and a second light-splitting port (13); and one side of the silicon photonics chip (2) is provided with a first optical input port (21) and a second optical input port (22), the first light-splitting port (12) being coupled to the first optical input port (21), and the second light-splitting port (13) being coupled to the second optical input port (22), such that the glass conversion waveguide (1) is coupled to the silicon photonics chip (2). Coupling the glass conversion waveguide (1) to the silicon photonics chip (2), and using the glass conversion waveguide (1) as a light entrance waveguide of the whole optical path can effectively avoid the two-photon effect and reduce the mode field mismatch during coupling of silicon waveguides and external optical paths, thus improving the overall performance of silicon photonics products.
G02B 6/12 - Guides de lumièreDétails de structure de dispositions comprenant des guides de lumière et d'autres éléments optiques, p. ex. des moyens de couplage du type guide d'ondes optiques du genre à circuit intégré
30.
OPTICAL SPLITTING STRUCTURE AND MANUFACTURING METHOD THEREFOR
An optical splitting structure and a manufacturing method therefor. The optical splitting structure comprises a main straight waveguide (20) and a plurality of branch waveguides (21, 22, 23, 24) branching off from the main straight waveguide (20), wherein there are branching angles (A) between the branch waveguides (21, 22, 23, 24) and the main straight waveguide (20); there are branching offset distances (G) between bifurcation positions of the branch waveguides (21, 22, 23, 24) and the main straight waveguide (20), and an optical axis (211) of the main straight waveguide (20); and the branching angles (A) and the branching offset distances (G) are set on the basis of optical splitting ratios (X) on the branch waveguides (21, 22, 23, 24), such that the branch waveguides (21, 22, 23, 24) have the corresponding optical splitting ratios (X). Since the main straight waveguide (20) does not change the angle of an optical path at a branching position and also does not bend, input light of the next-level branch waveguides (21, 22, 23, 24) on the main straight waveguide (20) still exhibits a quasi-symmetric single-mode optical field distribution. The optical splitting ratios (Y) of the branch waveguides (21, 22, 23, 24) are independent of each other, and can therefore be independently optimized and controlled, making it very easy to realize the optical characteristic of nearly 0 dB insertion loss consistency.
The present invention relates to the technical field of laser device wavelength locking, and particularly relates to a tunable laser device and a wavelength locking method. The tunable laser device comprises a laser device, a first etalon and a second etalon, wherein the first etalon and the second etalon have the same free spectral range (FSR); the peak value of the first etalon is aligned with an ITU wavelength; a wavelength aligned with the peak value of the second etalon has a preset wavelength interval from the ITU wavelength; and within a wavelength locking range of the laser device, the first etalon or the second etalon is alternately used to perform wavelength locking on a laser signal emitted by the laser device, so as to avoid peak value positions or valley value positions of a transmission spectrum of the etalon. Using a first etalon and a second etalon implements the locking of any wavelength of a laser device, thereby preventing the problem of it being impossible to lock a wavelength due to the fact that a wavelength to be locked falling into a region having a smaller etalon slope causes a circuit to be unable to be detected.
H01S 3/00 - Lasers, c.-à-d. dispositifs utilisant l'émission stimulée de rayonnement électromagnétique dans la gamme de l’infrarouge, du visible ou de l’ultraviolet
H01S 5/065 - Accrochage de modesSuppression de modesSélection de modes
The present application relates to the technical field of optical communications. Provided is a shock-resistant optical and electrical hybrid connector, comprising a male connector and a female connector, wherein the interiors of the male connector and the female connector are respectively provided with a first ceramic abutment head and a second ceramic abutment head which contain optical fibers, and a first metal contact head arranged on at least one side of the first ceramic abutment head, and a second metal contact head arranged on at least one side of the second ceramic abutment head. Further provided is an optical and electrical hybrid connector, comprising a male connector and a female connector, wherein the male connector is formed by a first shell sleeve, a first ferrule assembly, a middle shaft assembly and a first boot that are sleeved on each other; and the female connector is formed by a second shell sleeve, a second ferrule assembly, a power transmission assembly and a second boot that are sleeved on each other.
A tunable planar grating filter, comprising: a scaling component (1), a beam displacement prism (2) and a planar grating (3). The scaling component (1) comprises a first shaping prism (11) and a second shaping prism (12), the first shaping prism (11) and the second shaping prism (12) being arranged in sequence between the beam displacement prism (2) and the planar grating (3). A first apex angle (111) of the first shaping prism (11) and a second apex angle (121) of the second shaping prism (12) are both first preset angles (A), the included angle between two opposite surfaces of the first shaping prism (11) and the second shaping prism (12) is a second preset angle (B), and the included angle between incident light and the surface of the first shaping prism (11) facing the incident light is a third preset angle (C); thus, the scaling ratio of emitted light may be adjusted by adjusting the first preset angles (A), the second preset angle (B), and the third preset angle (C). Since the shaping prisms have a relatively low material cost, and also do not affect the sizes of other parts in the filter, an excessive increase in the cost can be avoided while adjustment of the optical signal scaling ratio is realized.
Disclosed is a limit display device comprising a movable assembly, limit assembly and display assembly. The display assembly is fixed in the movable assembly. The movable assembly is slidably matched with the limit assembly and comprises a limit slot. The limit assembly comprises a limit rod, one end of which is embedded into the limit slot, and the other end of which is fixed to the limit assembly; when the movable assembly drives the display assembly to slide, the limit rod synchronously slides along a preset path of the limit slot, keeping a locked or unlocked state of the display device. The limit display device is set on a side close to an inwall of a case and uses a hidden drawing mode, whereby a display screen of the display device may be completely exposed or hidden, avoiding touching the display screen mistakenly, and reducing the occupation of the space of the case in depth direction.
G09F 9/37 - Dispositifs d'affichage d'information variable, dans lesquels l'information est formée sur un support, par sélection ou combinaison d'éléments individuels dans lesquels le ou les caractères désirés sont formés par une combinaison d'éléments individuels à éléments mobiles
H05K 7/14 - Montage de la structure de support dans l'enveloppe, sur cadre ou sur bâti
A laser radar transceiver device. A transmitting end assembly (1) and an aspheric lens (2) are sequentially arranged, the transmitting end assembly (1) transmits an optical signal to the aspheric lens (2), the optical signal is collimated after passing though the aspheric lens (2), and the collimated optical signal is used for being directed toward a target to be detected. By adjusting the radius of curvature and conic coefficient of the surface of the aspheric lens (2), the size of spots of the collimated optical signal directed toward the target to be detected is controlled, and the size of spots generated at a distal end position by the optical signal is reduced, such that a laser radar can receive a return signal more accurately, and the accuracy of scanning and detection is improved.
A drift coefficient calibration method for a modulator, and a bias voltage control method and apparatus. The drift coefficient calibration method for a modulator comprises: using an (n-1)th drift coefficient to perform drift compensation on an (n-1)th actual optimal bias voltage, so as to obtain an n-th theoretical optimal bias voltage (202); using the difference between an n-th actual optimal bias voltage and the n-th theoretical optimal bias voltage to calibrate the (n-1)th drift coefficient, so as to obtain an n-th drift coefficient (203); and when the deviation, which is calculated by using a k-th drift coefficient, between a k-th theoretical optimal bias voltage and a k-th actual optimal bias voltage is less than a preset deviation, taking the k-th drift coefficient as a final drift coefficient (204). Thus, no extra complex circuits are required, and since no extra disturbance signals are introduced, the method is further suitable for signals with small optical power.
Provided in the present invention are a Y-type thin-film lithium niobate electro-optic modulator and a manufacturing method therefor. A lithium niobate layer on an electro-optic modulator chip is etched into corresponding curved waveguide structures, and the two curved waveguide structures are symmetrically arranged on two sides of a Y-type waveguide structure, such that it is ensured that two optical paths have a high degree of consistency. While ensuring a waveguide length, the curved waveguide structures reduce the size of the space required by waveguides. For the waveguides with the same length, chips with smaller dimensions can be used for mounting. Moreover, a signal electrode and a ground electrode are disposed on two sides of each straight waveguide of the curved waveguide structures to modulate optical signals in the waveguides, thereby meeting the modulation requirement of the electro-optic modulator.
G02F 1/035 - Dispositifs ou dispositions pour la commande de l'intensité, de la couleur, de la phase, de la polarisation ou de la direction de la lumière arrivant d'une source lumineuse indépendante, p. ex. commutation, ouverture de porte ou modulationOptique non linéaire pour la commande de l'intensité, de la phase, de la polarisation ou de la couleur basés sur des céramiques ou des cristaux électro-optiques, p. ex. produisant un effet Pockels ou un effet Kerr dans une structure de guide d'ondes optique
G02F 1/03 - Dispositifs ou dispositions pour la commande de l'intensité, de la couleur, de la phase, de la polarisation ou de la direction de la lumière arrivant d'une source lumineuse indépendante, p. ex. commutation, ouverture de porte ou modulationOptique non linéaire pour la commande de l'intensité, de la phase, de la polarisation ou de la couleur basés sur des céramiques ou des cristaux électro-optiques, p. ex. produisant un effet Pockels ou un effet Kerr
38.
OPTICAL MODULE HAVING UNLOCKING EARLY WARNING FUNCTION, AND USE METHOD
The present invention provides an optical module having an unlocking early warning function, and a use method. A lever is arranged on a base of the optical module, an inclined groove is formed in the lever, a pull handle for controlling the optical module to be pulled and inserted matches the inclined groove of the lever, upwarping or sinking of a chamfer on the lever is controlled by controlling the movement of the pull handle relative to the base, and the chamfer is used for matching a notch of a metal shielding cage to fix and unlock the optical module, such that the optical module is controlled to be fixed and unlocked by controlling the pull handle; in addition, a contact is further arranged at the lower end of the chamfer, and when the chamfer of the lever sinks, the contact is electrically connected to a PCB in the optical module, such that unlocking early warning is given in advance before the optical module is completely pulled out, and signal loss caused by mistaken pulling of the optical module is prevented.
A side-push-type mounting and dismounting mechanism and a mounting method thereof. The dismounting mechanism comprises a housing seat (1), a pull ring (2), and elastic supports (3); the pull ring (2) comprises a pair of sliding plates (21); the sliding plates (21) are each provided with a stop arm (211); the housing seat (1) comprises two side plates (11); a first accommodating cavity (111) is formed on the side plates (11); the sliding plates (21) can reciprocate relative to the two side plates (11); the elastic supports (3) are arranged in the first accommodating cavity (111); and the stop arms (211) abut against one side of the elastic supports (3), and reciprocate in the first accommodating cavity (111) along with the unlocking operation and reset operation process of the pull ring (2).
The present invention provides a photoelectric composite connector integrated with multiple photoelectric channels. A central joint and a peripheral joint are arranged at the front end of a photoelectric composite joint; a plurality of plug-side optical interfaces are arranged on an end surface of the central joint, and a plurality of plug-side electric interfaces are arranged on the side surface of the peripheral joint; correspondingly, a plurality of socket-side optical interfaces and a plurality of socket-side electric interfaces are provided in a socket slot of a photoelectric composite socket; and after the front end of the photoelectric composite joint is inserted into the socket slot of the photoelectric composite socket, the plug-side optical interfaces are correspondingly connected to the socket-side optical interfaces, and the plug-side electric interfaces are correspondingly connected to the socket-side electric interfaces, thereby realizing photoelectric composite transmission of multiple photoelectric channels.
H01R 24/56 - Dispositifs de couplage en deux pièces, ou l'une des pièces qui coopèrent dans ces dispositifs, caractérisés par leur structure générale ayant des contacts disposés concentriquement ou coaxialement spécialement adaptés à la haute fréquence spécialement adaptés à la forme spécifique des câbles, p. ex. câbles ondulés, câbles à paires torsadées, câbles double blindage ou câbles creux
This disclosure relates to the field of optical communication technology and provides a high-isolation light source filling device in a wavelength division multiplexing system and method thereof. The light source filling device comprises a multiplexing WSS and demultiplexing WSS, wherein a filling light source is arranged on an output port carrying no service, of the demultiplexing WSS, and the filling light source guides filling light into the output port carrying no service; the filling light is transmitted through a second common port of the demultiplexing WSS or a light splitting device arranged on a first common port of the demultiplexing WSS, and the filling light transmitted through the demultiplexing WSS is guided into an input port carrying no service, of the multiplexing WSS. In this disclosure, it achieves the filling of high-isolation wide-spectrum noise light, and on the other hand, it does not add additional filtering devices.
H04B 10/25 - Dispositions spécifiques à la transmission par fibres
G02B 6/293 - Moyens de couplage optique ayant des bus de données, c.-à-d. plusieurs guides d'ondes interconnectés et assurant un système bidirectionnel par nature en mélangeant et divisant les signaux avec des moyens de sélection de la longueur d'onde
H04J 14/02 - Systèmes multiplex à division de longueur d'onde
42.
RADIO FREQUENCY OPTICAL ASSEMBLY, CORRESPONDING MODULE COMPRISING SAME, AND WIRELESS TRANSMISSION SYSTEM
The present invention relates to the technical field of communications, and provides a radio frequency optical assembly, a corresponding module comprising same, and a wireless transmission system. The radio frequency optical assembly comprises a first filtering assembly, a second filtering assembly, a light transmitting assembly, and a light detection assembly. The first filtering assembly and the second filtering assembly both transmit emitted light; the first filtering assembly further receives a first light signal and reflects the first light signal to a second port, so that the emitted light and the first light signal are combined together and outputted; the first filtering assembly further receives a second light signal, reflects a forwarding light signal in the second light signal and outputs the reflected forwarding light signal, and transmits received light in the second light signal; and the second filtering assembly refracts the received light to the light detection assembly. The present invention provides a radio frequency optical assembly, and the radio frequency optical assembly is used in a HUB or an RRU, reducing the cost of a network architecture and the complexity of the network architecture, and solving the problem of a decrease of the rate of a final-stage pRRU.
The present disclosure provides a combined filter. The combined filter comprises: a first filter; and a second filter, which is combined with the first filter. The second filter comprises at least an input waveguide structure, an output waveguide structure, and an arrayed waveguide located between the input waveguide structure and the output waveguide structure. The input waveguide structure and/or the output waveguide structure comprise(s): a first waveguide component, which is provided with a gap; and two second waveguide components, which are symmetrically arranged on two opposite sides of the first waveguide component, wherein the second waveguide components are connected to the first waveguide component, and the refractive index of the second waveguide components changes periodically.
G02B 6/293 - Moyens de couplage optique ayant des bus de données, c.-à-d. plusieurs guides d'ondes interconnectés et assurant un système bidirectionnel par nature en mélangeant et divisant les signaux avec des moyens de sélection de la longueur d'onde
A slotting method and a slotting device. The method is applied to a waveguide chip having a slotting mark (103). The method comprises: on the basis of a slotting mark (103) on a first surface of a waveguide chip, arranging a grooving area on a second surface of the waveguide chip, the projection of the slotting mark (103) on the second surface of the waveguide chip being located within the grooving area; fixing the grooved waveguide chip to a slotting substrate, the projection of the grooved area on the slotting substrate being located within the slotting area of the slotting substrate; and on the basis of the slotting mark (103) on the first surface of the waveguide chip, slotting the waveguide chip to form a slot in the waveguide chip.
B28D 5/00 - Travail mécanique des pierres fines, pierres précieuses, cristaux, p. ex. des matériaux pour semi-conducteursAppareillages ou dispositifs à cet effet
A waveguide structure, comprising: a first waveguide component (101) provided with a gap (101a); two second waveguide components (102), which are symmetrically arranged on two opposite sides of the first waveguide component (101), wherein the second waveguide components (102) are connected to the first waveguide component (101), and the refractive index of the second waveguide components (102) changes periodically.
The present disclosure provides an arrayed waveguide grating. The arrayed waveguide grating comprises: an input waveguide structure, which comprises an input waveguide and an input side planar waveguide; an output waveguide structure, which comprises an output waveguide and an output side planar waveguide; and an arrayed waveguide, which is located between the input waveguide structure and the output waveguide structure and is connected to both the input side planar waveguide and the output side planar waveguide. The input side planar waveguide and/or the output side planar waveguide comprise(s): a first waveguide component, which is provided with a gap; and two second waveguide components, which are symmetrically arranged on two opposite sides of the first waveguide component, wherein the second waveguide components are connected to the first waveguide component, and the refractive index of the second waveguide components changes periodically.
G02B 6/293 - Moyens de couplage optique ayant des bus de données, c.-à-d. plusieurs guides d'ondes interconnectés et assurant un système bidirectionnel par nature en mélangeant et divisant les signaux avec des moyens de sélection de la longueur d'onde
The embodiments of the present disclosure disclose a method and apparatus for detecting a phase difference and delay of a coherent receiver as well as a storage medium. The method comprises: acquiring a first set of signals and a second set of signals output by the coherent receiver; processing the first set of signals to obtain a first phase difference corresponding to the first set of signals; processing the second set of signals to obtain a second phase difference corresponding to the second set of signals; obtaining a phase difference and delay of the coherent receiver based on the first phase difference and the second phase difference. By using the above methods, the phase difference and delay detection accuracy of coherent receivers can be improved.
H04B 10/079 - Dispositions pour la surveillance ou le test de systèmes de transmissionDispositions pour la mesure des défauts de systèmes de transmission utilisant un signal en service utilisant des mesures du signal de données
An optical port assembly and optical module. The optical port assembly comprises a connector connected with an optical fiber, an adaptor having an accommodation cavity, and a shield extending into the accommodation cavity to be fixed. The shield has a hollow matching cavity, into which the adaptor extends to fixedly connect with the adaptor and the shield. The shield is wrapped on the adaptor to define the relative position between the shield and the adaptor, thereby defining the relative position between the shield and optical fiber then defining the position of an opening on the shield for allowing the optical fiber to pass through. The relative position between the opening and optical fiber is fixed, whereby the size of the opening may be set to be approximately the same as that of the cross-section of the optical fiber to minimize of the opening and reduce the electromagnetic leakage thereat.
Disclosed is an active optical cable comprising an optical cable; optical modules, arranged at each of two ends of the optical cable and optically coupled with the optical cable, at least one of which is detachably connected with the optical cable; a first connecting terminal connected to one end of the optical cable and optically coupled with the optical cable; a second connecting terminal connected to the optical module and optically coupled with the optical module, the first connecting terminal and the second connecting terminal being optically coupled; and a connecting sleeve which is connected between the optical cable and the second connecting terminal and keeps the first connecting terminal and the second connecting terminal in an optical coupling state, wherein at least one of the optical cable and the second connecting terminal is detachably connected with the connecting sleeve.
Disclosed in the embodiments of the present application are an amplification apparatus and method for an optical signal, and an optical communication system. The amplification apparatus comprises: a fourth optical processor, which is used for receiving second pump light and third pump light, and performing wave combination processing on the second pump light and the third pump light, so as to form first mixed pump light; a third optical processor, which is used for receiving first pump light; a second optical processor, which is used for receiving the first pump light and the first mixed pump light, and performing wave combination processing on the first pump light and the first mixed pump light, so as to form second mixed pump light; a first optical processor, which is used for receiving the second mixed pump light and fourth pump light, and performing wave combination processing on the second mixed pump light and the fourth pump light, so as to form third mixed pump light; and a transmission optical fiber, which is used for receiving a service optical signal that includes a full wave band, and the third mixed pump light, and amplifying an optical signal of at least one wave band in the service optical signal on the basis of the third mixed pump light.
Disclosed are an optical waveguide device and manufacturing method thereof. The optical waveguide device includes a substrate and an optical modulation module electrically connected with the substrate, the optical modulation module including: an underlay having a first surface relatively close to the substrate and a second surface relatively far away from the substrate, which are provided opposite to each other; an optical waveguide lamination, located between the first surface of the underlay and the substrate, including a lower cladding layer, an optical waveguide layer and an upper cladding layer located between the first surface of the underlay and the optical waveguide layer, which are three stacked in a first direction perpendicular to a plane where the underlay is located; and a conductive structure, located between the optical waveguide layer and the substrate and electrically connected with the optical waveguide layer to conduct an electric signal to the optical waveguide layer.
G02F 1/035 - Dispositifs ou dispositions pour la commande de l'intensité, de la couleur, de la phase, de la polarisation ou de la direction de la lumière arrivant d'une source lumineuse indépendante, p. ex. commutation, ouverture de porte ou modulationOptique non linéaire pour la commande de l'intensité, de la phase, de la polarisation ou de la couleur basés sur des céramiques ou des cristaux électro-optiques, p. ex. produisant un effet Pockels ou un effet Kerr dans une structure de guide d'ondes optique
52.
ACTIVE OPTICAL CABLE ASSEMBLY AND ASSEMBLING METHOD THEREOF
Disclosed are an active optical cable assembly and assembling method thereof. The assembly comprises an optical fiber connector, optical port adapter, and optical transceiver sequentially connected, the latter two being pluggably connected; wherein the optical fiber connector comprises a movable kit, and a tail sleeve, an intermediate connection sleeve, and a plug connector sequentially connected; the movable kit is sleeved on the outer side of the plug connector for preventing the plug connector from detaching from the optical port adapter after inserted into the optical port adapter; a blocking member is disposed between the tail sleeve and the movable kit, and prevents the movable kit from sliding backwards. When the blocking member is removed and the movable kit is slid backwards to the intermediate connection sleeve, the plug connector is pullable out from the optical port adapter, whereby the optical transceiver is not connected to the optical cable during assembly.
An ultra-wideband Raman amplifier for eliminating the influence of an OSC signal on gain, and a control method. Before being coupled to pump optical signals of n pump lasers (102, 103, 104, 105, 106, 107), an OSC detection optical signal is further coupled to a first optical splitter (118), and the measured OSC detection optical signal strength is transferred to a control unit (101) by means of a first detector (115-5) at an output port side of the first optical splitter (118), so that the control unit (101) adjusts, according to the OSC detection optical signal strength, the optical power of one or more pump lasers, consistent with or similar to a frequency band of the OSC detection optical signal, in the n pump lasers (102, 103, 104, 105, 106, 107) which are controlled by the control unit (101). The influence of the power of the supervising channel OSC on the gain control accuracy can be eliminated, the power of a pump laser having a longest wavelength is reduced, and the power consumption is reduced, thereby improving the gain control accuracy of the whole system.
H01S 3/30 - Lasers, c.-à-d. dispositifs utilisant l'émission stimulée de rayonnement électromagnétique dans la gamme de l’infrarouge, du visible ou de l’ultraviolet utilisant des effets de diffusion, p. ex. l'effet Brillouin ou Raman stimulé
H04B 10/2537 - Dispositions spécifiques à la transmission par fibres pour réduire ou éliminer la distorsion ou la dispersion due à des procédés de diffusion, p. ex. diffusion par effet Raman ou Brillouin
H04B 10/077 - Dispositions pour la surveillance ou le test de systèmes de transmissionDispositions pour la mesure des défauts de systèmes de transmission utilisant un signal en service utilisant un signal de surveillance ou un signal supplémentaire
54.
PHOTOELECTRIC HYBRID CONNECTOR AND PHOTOELECTRIC HYBRID ADAPTER
A photoelectric hybrid connector and a photoelectric hybrid adapter. The photoelectric hybrid connector comprises: a housing assembly having a front-to-back through accommodating space; a light guide assembly having a tail handle, a plug core, and an optical fiber, wherein the plug core is positioned at one end of the tail handle, the tail handle is positioned in the accommodating space, and the optical fiber sequentially penetrates the tail handle and the plug core; and a conductive assembly having at least one conductive pin and a cable connected to the conductive pin, wherein the conductive pin and the plug core are located on the same side of the accommodating space. The conductive pin and the plug core share one insertion part on the same side, and a photoelectric channel can be established by one insertion, thereby simplifying the insertion operation of the photoelectric hybrid connector.
Provided in the present disclosure are a filter processing method and apparatus, and a device and a storage medium. The method comprises: determining a first insertion loss interval where an insertion loss value of a first filter to be joined is located, and a second insertion loss interval where an insertion loss value of a second filter to be joined is located; and when the first insertion loss interval where the insertion loss value of said first filter is located and the second insertion loss interval where the insertion loss value of said second filter is located meet a preset matching relationship, associating said first filter with said second filter, wherein said first filter and said second filter, which are associated with each other, are configured to be joined together to obtain a target filter. In the present disclosure, the fluctuation of an insertion loss index of a target filter can be reduced, thereby enhancing the consistency of the insertion loss index of the target filter, such that the performance of the target filter is better, and the pass rate thereof is higher.
A method and an apparatus for controlling a wavelength of an optical module, and a storage medium. The method comprises: determining an initial temperature compensation curve corresponding to a transmitter optical subassembly TOSA in an optical module (S101); obtaining a first control voltage to be applied to a TEC according to a current ambient temperature and the initial temperature compensation curve; and controlling the TOSA to emit a first light wave based on the first control voltage, whose wavelength is a first wavelength (S102); when the first wavelength does not meet a setting range, adjusting the control voltage applied to the TEC until the control voltage applied to the TEC reaches a second control voltage, the second control voltage being capable of controlling the TOSA to emit a second light wave at the current ambient temperature, whose wavelength is a second wavelength meeting the setting range; and updating the initial temperature compensation curve based on the second control voltage (S103).
Provided in the present disclosure are a method and apparatus for determining a tolerable wavelength offset of a combined filter, and a storage medium. The combined filter comprises: a comb filter and a wavelength-division multiplexer. The method comprises: on the basis of a first-type desired index and second-type desired index of a combined filter, determining a plurality of first tolerable wavelength offsets of the combined filter when the combined filter satisfies the first-type desired index and the second-type desired index, wherein the first-type desired index comprises an adjacent isolation index and a non-adjacent isolation index; determining a target tolerable wavelength offset of a comb filter according to a first tolerable wavelength offset corresponding to the adjacent isolation index and a first tolerable wavelength offset corresponding to the second-type desired index; and determining a target tolerable wavelength offset of a wavelength-division multiplexer according to a first tolerable wavelength offset corresponding to the non-adjacent isolation index.
Provided in the present disclosure are an index determination method and apparatus for a spliced filter, and a storage medium. The spliced filter comprises: a comb filter and a wavelength division multiplexer. The method comprises: acquiring first data of a spliced filter at a first temperature; respectively acquiring temperature related parameters of a comb filter and a wavelength division multiplexer in the spliced filter at a second temperature; on the basis of the temperature related parameters of the comb filter and the wavelength division multiplexer at the second temperature and the first data of the spliced filter, determining second data of the spliced filter at the second temperature; and determining an index value of the spliced filter at the second temperature on the basis of the first data and/or the second data of the spliced filter.
H04B 10/079 - Dispositions pour la surveillance ou le test de systèmes de transmissionDispositions pour la mesure des défauts de systèmes de transmission utilisant un signal en service utilisant des mesures du signal de données
59.
COMBINED FILTER, COMBINING METHOD, AND ELECTRONIC DEVICE
Provided in the embodiments of the present invention are a combined filter, a combining method, and an electronic device. The combined filter comprises a first filter, and a second filter, which is combined with the first filter, wherein the passband width of the transmission spectrum of the second filter is greater than the passband width of the transmission spectrum of the first filter, and the passband unevenness of the transmission spectrum of the second filter is less than the passband unevenness of the transmission spectrum of the first filter. In the combined filter provided in the present invention, the number of filtering stages of a signal is increased by means of cascading a first filter to a second filter; moreover, on the basis of the relationships regarding the passband widths and passband unevenness of the transmission spectrum of the first filter and the transmission spectrum of the second filter, the combined filter can inherit the shape within the passband of the transmission spectrum of the first filter, and can thus better inherit the excellent performance of the first filter.
Provided in the present disclosure are a combination filter, a combination method and an electronic device. The combination filter comprises a first-type filter and a second-type filter combined therewith, the first-type filter processing an input signal and then outputting same to the second-type filter, wherein the combination filter is a multi-order super-Gaussian filter. While involving the high-performance indexes of the first-type filter and the second-type filter, the embodiments of the present disclosure further improve the performance indexes of the combination filter by cascading two stages, i.e. the first-type filter and the second-type filter, and the multi-order super-Gaussian filter has a highly rectangular spectrum shape, exhibits low cost and is convenient to popularize.
G02B 6/12 - Guides de lumièreDétails de structure de dispositions comprenant des guides de lumière et d'autres éléments optiques, p. ex. des moyens de couplage du type guide d'ondes optiques du genre à circuit intégré
G02B 6/124 - Lentilles géodésiques ou réseaux intégrés
G02B 6/293 - Moyens de couplage optique ayant des bus de données, c.-à-d. plusieurs guides d'ondes interconnectés et assurant un système bidirectionnel par nature en mélangeant et divisant les signaux avec des moyens de sélection de la longueur d'onde
The present invention relates to the technical field of photoelectric communication. Provided is a module with a network interface. The module with a network interface comprises a base, a circuit assembly and a shielding elastic piece. A screw base is arranged on the base, and a first boss is arranged on a side face of the base. The circuit assembly comprises a circuit board, a network interface and a grounding spring piece, wherein the circuit board is provided with a first notch, and the first notch is coupled to a side wall of the screw base; and the grounding spring piece is fixed on the circuit board and connected to the base. The shielding elastic piece comprises two side walls arranged opposite each other, wherein each side wall is provided with a folded edge, the folded edge is provided with a first buckling hole, and the first boss is buckled into the first buckling hole, so as to fix the shielding elastic piece on the base. In the present invention, by means of the arrangement of the shielding elastic piece and the grounding spring piece, the circuit board is grounded, and the EMC performance of the module is improved.
H01R 24/30 - Pièces de couplage portant des broches, des lames ou des contacts analogues, assujetties uniquement à un fil ou un câble avec des contacts supplémentaires de mise à la terre ou de blindage
62.
BOSA DEVICE ASSEMBLING APPARATUS AND MOUNTING METHOD THEREFOR
A BOSA device assembling apparatus and a mounting method therefor. The assembling apparatus comprises: a BOSA device (1) and a middle base (2). The BOSA device (1) comprises a base; the base comprises a first side surface (11) and a second side surface (12) which are oppositely arranged; the first side surface (11) is provided with a first boss (13); and the second side surface (12) is provided with a second boss (14). The middle base (2) comprises a bottom plate (23), first limiting arms (21), and a second limiting arm (22); the first limiting arms (21) and the second limiting arm (22) are both arranged on the bottom plate (23), and the first limiting arms (21) and the second limiting arm (22) are oppositely arranged; the bottom plate (23), the first limiting arms (21), and the second limiting arm (22) define a mounting space, wherein a first snap-fit hole (211) is formed in each first limiting arm (21), and a second snap-fit hole (221) is formed in the second limiting arm (22). The bottom plate (23) is further provided with at least one protruding leg (231); the protruding leg (231) is arranged on the side facing away from the first limiting arm (21); and the protruding leg (231) is configured to be fixed in a positioning hole (31) of a PCB. The base is arranged in the mounting space, and the first boss (13) is snap-fitted to the first snap-fit hole (211), and the second boss (14) is snap-fitted to the second snap-fit hole (221), such that the BOSA device (1) is fixed on the middle base (2).
The present invention provides an integrated SC and a use method. The assembled intermediate members are accommodated and fixed by an integrated optical port seat, and butt-jointing of SC jumpers can be completed by inserting the SC jumpers into insertion seats of the corresponding intermediate members. The integrated optical port seat does not need to be subjected to an ultrasonic fusion process, so that the fracture risk of SCs is avoided.
Provided in the embodiments of the present disclosure are a method for determining the offset of a wave, an apparatus, a device, and a storage medium. The method comprises: acquiring loss data of a wave at a first working temperature; determining whether the loss data satisfies the requirement of a preset index; and, when the loss data satisfies the requirement of the preset index, determining a target offset of the wave at the first working temperature on the basis of the loss data and the preset index. By acquiring the loss data of the wave at the first working temperature and by determining the target offset of the wave at the first working temperature on the basis of the requirement of the preset index corresponding to the loss data, chips are screened according to the target offset, thereby increasing the utilization rate of the chips while ensuring the qualified rate of finished products.
H04B 10/077 - Dispositions pour la surveillance ou le test de systèmes de transmissionDispositions pour la mesure des défauts de systèmes de transmission utilisant un signal en service utilisant un signal de surveillance ou un signal supplémentaire
65.
FILTER INDEX DETERMINATION METHOD AND APPARATUS, DEVICE, AND COMPUTER READABLE STORAGE MEDIUM
A filter index determination method and apparatus, a device, and a computer readable storage medium. The method comprises: on the basis of first data of a filter at a first temperature and preset data of the filter at a second temperature, determining second data of the filter at the second temperature; and determining an index value of the filter at the second temperature on the basis of the second data of the filter at the second temperature. According to the method, a filter index in a high-low temperature environment is simply and efficiently evaluated, the cost is low, and production is facilitated. The method further comprises: deducing the preset data of the filter on the basis of the first data of the filter at the first temperature and an index requirement corresponding to the index value, and then, according to a correspondence between the preset data and the temperature, determining a temperature range of the filter under a certain index requirement.
Provided in the embodiments of the present disclosure are a wave compensation method and apparatus, and a device and a readable storage medium. The method comprises: acquiring a central wavelength corresponding to a wave, wherein the central wavelength represents a wavelength which meets a first preset condition and corresponds to the wave covering the center of a spectral range; determining a first offset of the central wavelength; when the first offset meets a second preset condition, determining a first wavelength parameter of the wave on the basis of the central wavelength and the first offset; determining a compensation parameter for the wave on the basis of the first wavelength parameter; and compensating for the wave according to the compensation parameter. A first offset corresponding to a central wavelength is calculated, chips are precisely screened according to the first offset, and a compensation parameter for compensating for a wave is determined according to the first offset and the central wavelength, such that the effective utilization rate of the chips is further increased while it is ensured that an index is up-to-standard.
Provided in the embodiments of the present disclosure are a wave compensation method and apparatus, and a device and a readable storage medium. The method comprises: acquiring a central wavelength corresponding to a wave, wherein the central wavelength represents a wavelength which meets a first preset condition and corresponds to the wave covering the center of a spectral range; determining a first offset of the central wavelength; when the first offset meets a second preset condition, determining a first compensation parameter for the wave; determining a second offset of the central wavelength on the basis of the first compensation parameter; and compensating for the wave according to the second offset. A first offset corresponding to a central wavelength is calculated, chips are precisely screened according to the first offset, a second offset of the central wavelength is determined according to a first compensation parameter and the central wavelength, and a wave is compensated for on the basis of the second offset, such that the effective utilization rate of the chips is further increased while it is ensured that an index is up-to-standard.
Provided in the embodiments of the present disclosure are a wave correction method and apparatus, and a device and a computer-readable storage medium. The method comprises: determining an operating offset of a wave; determining a first offset of the wave at a first operating temperature, wherein the first operating temperature is any one of a plurality of operating temperatures corresponding to the wave; and when the first offset is greater than the operating offset, correcting, according to the first offset, a central wavelength corresponding to the wave, wherein the central wavelength represents a wavelength which corresponds to the center of the covered spectral range of the wave and meets a first preset condition. A first offset of a wave at a first operating temperature is determined, and when the first offset is greater than an operating offset, a central wavelength corresponding to the wave is corrected, thereby precisely, efficiently and significantly increasing the yield of product indexes.
G01K 11/3206 - Mesure de la température basée sur les variations physiques ou chimiques, n'entrant pas dans les groupes , , ou utilisant des changements dans la transmittance, la diffusion ou la luminescence dans les fibres optiques en des endroits distincts de la fibre, p. ex. utilisant la diffusion de Bragg
An optical module using a pull tab (1) for unlocking. The optical module mainly comprises the pull tab (1), a base (2), an engagement cover (3), a brake pad (4), elastic pieces (5) and a spring (6), wherein the spring (6) is arranged in the base (2); the elastic pieces (5) are respectively arranged on the left and the right of the base (2); two side walls of the pull tab (1) are engaged with an outer side of the front end of the base (2), and respectively press the left and right elastic pieces (5); the brake pad (4) is rotatably arranged in the base (2); one end of the brake pad (4) is pushed against by the spring (6), and the other end of the brake pad (4) is located on the pull tab (1); and the engagement cover (3) is engaged with the base (2), and limits the brake pad (4). The optical module is applicable to a photoelectric module for limiting the maximum height after rotation of the pull tab (1), and is applicable to a communication device with high-density ports; a color scale of the module is more directly observable and is convenient to identify; the module can be provided with optical fiber plugging and unplugging, such that the contamination of an end face of an optical fiber is reduced, and the module is convenient to maintain and use; and the module is smoother to unlock, without lag.
A coherent receiving device and anemometry lidar system. The device includes: a polarization maintaining optical fiber pin for receiving local oscillation light and outputting it to frequency mixer; a polarization beam splitting prism for receiving signal light, splitting it into first and second signal light, and outputting them to the frequency mixer; the frequency mixer for mixing the first and second signal light with the local oscillation light and outputting the mixed light to PD array; the PD array for converting the mixed light to differential current signal; and a signal processing circuit for converting the differential current signal to differential voltage signal whose derivation formula includes part of frequency difference between the signal light and local oscillation light, detecting a frequency of the differential voltage signal to obtain a value of the frequency difference, and obtaining Doppler frequency shift amount of the signal light according to the value.
G01P 5/26 - Mesure de la vitesse des fluides, p. ex. d'un courant atmosphériqueMesure de la vitesse de corps, p. ex. navires, aéronefs, par rapport à des fluides en mesurant l'influence directe du courant de fluide sur les propriétés d'une onde optique de détection
Disclosed are a single-optical-fiber bidirectional transceiving device and an optical fiber communication system. The device comprises a composite optical transmission port being coupled with an optical fiber; an optical input port for outputting an inputted emitting signal to the composite optical transmission port; an optical output port for outputting a receiving signal input from the composite optical transmission port; an bidirectional optical transmission assembly for transmitting the receiving signal input from the composite optical transmission port to an optical guide assembly and an emitting signal output from the optical guide assembly to the composite optical transmission port; and the optical guide assembly for transmitting the emitting signal input from the optical input port to the bidirectional optical transmission assembly and a receiving signal output from the bidirectional optical transmission assembly to the optical output port, whereby a bidirectional optical transceiving function can be realized through a single optical fiber.
A thermally tuned laser chip and a manufacturing method therefor. The thermally tuned laser chip comprises a substrate (1), and multiple functional layers (2) that are sequentially grown on the substrate (1), wherein: a ridge waveguide of the laser is located in an axial direction of light emitted from the laser, first heat insulation grooves (3) penetrating through all the functional layers (2) until communicated with the substrate (1) are provided in the channels on both sides of the ridge waveguide, and at least one functional layer (2) below the ridge waveguide is hollowed out to form a cavity heat insulation area (4). The cavity heat insulation area (4) is formed by etching at least one pair of second heat insulation grooves (5) on the two sides of the ridge and then corroding at least one functional layer (2) between the pair of second heat insulation grooves (5). Moreover, the two sides of the cavity heat insulation area (4) are adjacent to the first heat insulation groove (3). The thermally tuned laser chip avoids heat loss inside the chip, and improves the temperature insulation effect of the chip and the thermal tuning efficiency of the chip.
The present invention relates to a method and device for topology discovery and connectivity verification in a ROADM system. The method mainly comprises: any device for topology discovery and connectivity verification in a ROADM system sends, in a broadcasting manner after being powered on, its own first device information to the other devices for topology discovery and connectivity verification in the ROADM system; the any device for topology discovery and connectivity verification in the ROADM system receives test light information sent by a certain port of a WSS, stores first device information, in the test light information, of the other devices for topology discovery and connectivity verification in the ROADM system as second device information, and superposes the first device information and the second device information and then sends same to the other devices for topology discovery and connectivity verification in the ROADM system; the any device compares its own first device information with the second device information in the received information, and if said pieces of information are consistent, link pairing succeeds, and the any device records its own first device information and the first device information in the received information in a paired manner. The present invention can reduce cost, and can automatically perform topology discovery and matching connection and verify the correctness of the connection, thereby avoiding the problem that errors are prone to occur in manual connections of conventional optical fiber links.
Disclosed in the embodiments of the present disclosure are a photoelectric detector and a manufacturing method therefor. The photoelectric detector comprises: an n-type semiconductor substrate, which has a first surface and a second surface opposite each other; a light absorption layer and a semiconductor layer, which are sequentially arranged on the first surface of the n-type semiconductor substrate in a stacked manner; a p-type doped region, which is located in the semiconductor layer, wherein the p-type doped region extends from the top surface of the semiconductor layer to the light absorption layer, and is in contact with the light absorption layer, the p-type doped region comprises a body, a first protrusion and a second protrusion, the first protrusion and the second protrusion are located on two opposite sides of the body, and in a direction parallel to the light absorption layer, the first protrusion protrudes in a direction that faces away from the second protrusion, and the second protrusion protrudes in a direction that faces away from the first protrusion; a p-type contact layer, which is located on the p-type doped region, and is in contact with the p-type doped region; a first electrode layer, which covers and is in contact with the p-type contact layer; and a second electrode layer, which covers and is brought into contact with the second surface of the n-type semiconductor substrate, and which exposes at least part of a region of the second surface. According to the photoelectric detector in the embodiments of the present disclosure, electro-static discharge damage is reduced.
H01L 31/107 - Dispositifs sensibles au rayonnement infrarouge, visible ou ultraviolet caractérisés par une seule barrière de potentiel ou de surface la barrière de potentiel fonctionnant en régime d'avalanche, p.ex. photodiode à avalanche
75.
METHOD AND SYSTEM FOR SENDING MULTI-MODE PILOT TONE SIGNAL, AND METHOD AND SYSTEM FOR RECEIVING MULTI-MODE PILOT TONE SIGNAL
The present disclosure relates to a method and system for sending a multi-mode pilot tone signal, and a method and system for receiving a multi-mode pilot tone signal. The sending method comprises: a micro control unit configuring multi-mode pilot tone data, so as to control the amplitude and frequency of a pilot tone signal, and outputting a pilot tone digital signal; an external pilot tone hardware circuit converting the pilot tone digital signal into a pilot tone analog signal; and superposing the pilot tone analog signal on a high-speed data signal of a high-speed laser, so as to form a pilot tone signal channel. In the present disclosure, the selection of various pilot tone modes can be solved by using only one product model, such that the problem of management of far-end optical modules is solved, production costs and inventory pressure are reduced, and a pilot tone mode can be flexibly switched without the need for replacing an optical module on site, thereby reducing the costs for operation and maintenance.
An optical element (12) fixation structure, comprising: a module housing (10), a fixation main body (111), a first fixation unit (112), a second fixation unit (113), a third fixation unit (114), and an elastic fixation unit (115), wherein the first fixation unit (112) is used for fixing to a first end (1111) of the fixation main body in a snap-fit manner a first end (131) of a fiber optic connector and a first end (121) of an optical element, the second fixation unit (113) is used for fixing to a second end (1112) of the fixation main body in an attaching manner a second end (132) of the fiber optic connector and a second end (122) of the optical element, and the third fixation unit (114) is used for fixing side edges of the optical element (12) to two sides of the fixation main body (111). The optical element (12) fixation structure fixes the fiber optic connector (13) and the optical element (12) by means of an ingenious structural fitting between the optical element (12) fixation structure, and the fiber optic connector (13) and the optical element (12) without assistance of other parts, which simplifies the components of the optical element (12) fixation structure, and meanwhile achieves more convenient installation and disassembly.
An optical signal adjusting apparatus, device and method, and storage medium. The optical signal adjusting apparatus (1) includes a differential operation circuit (11), a feedforward amplification circuit (12) and a control circuit (13), wherein input ends of control circuit (13) are respectively connected to an output end of the differential operation circuit (11) and an output end of the feedforward amplification circuit (12); the differential operation circuit (11) is configured to perform a differential operation on an input optical signal and an output optical signal, to obtain a differential value; the feedforward amplification circuit (12) is configured to perform feedforward amplification on the input optical signal, to obtain a feedforward value; and the control circuit (13) is configured to receive the differential value and the feedforward value, and adjusts the output optical signal according to the differential value and the feedforward value, to obtain an adjusted output optical signal.
An integrated optical circulator comprising at least two single-fiber bidirectional optical fiber interfaces, a refractive element group, an optical isolation element group, and an optical fiber array, wherein the refractive element group and the optical isolation element group are sequentially arranged on a same optical path; incident signal light from each optical fiber interface sequentially passes through the refractive element group and the optical isolation element group, then is output by a corresponding outgoing optical fiber of the optical fiber array; incident signal light from each incident optical fiber of the optical fiber array sequentially passes through the optical isolation element group and the refractive element group, then is emitted by a corresponding optical fiber interface. Multiple optical circulators are integrated within the volume of a same optical circulator, reducing the volume occupied by optical circulators, lowering overall cost of the device, and improving convenience of optical path integration.
G02F 1/095 - Dispositifs ou dispositions pour la commande de l'intensité, de la couleur, de la phase, de la polarisation ou de la direction de la lumière arrivant d'une source lumineuse indépendante, p. ex. commutation, ouverture de porte ou modulationOptique non linéaire pour la commande de l'intensité, de la phase, de la polarisation ou de la couleur basés sur des éléments magnéto-optiques, p. ex. produisant un effet Faraday dans une structure de guide d'ondes optique
G02F 1/09 - Dispositifs ou dispositions pour la commande de l'intensité, de la couleur, de la phase, de la polarisation ou de la direction de la lumière arrivant d'une source lumineuse indépendante, p. ex. commutation, ouverture de porte ou modulationOptique non linéaire pour la commande de l'intensité, de la phase, de la polarisation ou de la couleur basés sur des éléments magnéto-optiques, p. ex. produisant un effet Faraday
G02B 27/28 - Systèmes ou appareils optiques non prévus dans aucun des groupes , pour polariser
79.
Communication station, optical communication system, data transmission method, and storage medium
Provided are a communication station, an optical communication system, a data transmission method, and a storage medium. The communication station is a first station including: a first reconfigurable optical add-drop multiplexing ROADM device, including a first port used to connect a cable in a first direction of a network; a second ROADM device connected to the first ROADM device and including a second port which may be used to connect a cable in a second direction of the network being different from the first direction; an optical protection device connected to each of the first and second ROADM devices and used to control the first station to transmit communication with a second station for a corresponding service in the first direction corresponding to the first ROADM device, or to transmit communication with the second station for a corresponding service in the second direction corresponding to the second ROADM device.
H04J 14/02 - Systèmes multiplex à division de longueur d'onde
H04B 10/079 - Dispositions pour la surveillance ou le test de systèmes de transmissionDispositions pour la mesure des défauts de systèmes de transmission utilisant un signal en service utilisant des mesures du signal de données
China Information Communication Technologies Group Corporation (Chine)
Inventeur(s)
Yin, Hualin
Chu, Shijie
Tan, Shuwei
Zhou, Yuan
Abrégé
A lens clamping device, relating to the field of optical communication devices, comprises: a base; a sliding mechanism slidably connected with the base and movable relative to the base along a first direction; a transmission mechanism connected with the sliding mechanism and having a first and a second clamping member capable of relatively away from and close to each other along a second direction perpendicular to the first direction; and a suction nozzle fixedly connected to one end of the sliding mechanism along the first direction and used for sucking a lens; wherein the suction nozzle is between the first and second clamping member which are relatively close to each other to limit the displacement of the lens in the second direction. The lens clamping device improves the reliability of picking up the lens by means of limit in two directions.
Disclosed are a signal demodulation method and apparatus, a computer storage medium and a device. The method comprises: acquiring a signal to be demodulated; performing direct current blocking and bias processing on the signal to obtain a processed signal; comparing the processed signal with a preset decision signal, and obtaining a demodulation signal according to a comparison result. Thus, direct current blocking processing on a modulation signal can avoid dynamic changes of DC components caused by average power changes of carrier signals, avoiding wrongly demodulating the modulation signal. Bias processing after the direct current blocking on the modulation signal can further realize an AC signal decision without introducing a negative pressure source. A real-time decision on the processed signal via the preset decision signal can dynamically adapt the average power of carrier signals, thereby ensuring to correctly demodulate the modulation signal and improving the accuracy of demodulation results.
Disclosed are an optical fiber time domain reflectometer (OTDR), a test system, test method, and a storage medium. The OTDR comprises: an input end for receiving an input service optical signal; a first filter connected with the input end and for filtering an interference signal with a wavelength equal to a test wavelength of the OTDR in the service optical signal; a wavelength division multiplexing WDM device having a reflection end, a transmission end and an output end; and an OTDR basic unit connected with the transmission end and used for emitting an OTDR signal equal to a test wavelength and receiving a return signal of the OTDR signal, wherein the output end of the WDM device is for outputting a filtered service optical signal received from the reflection end, outputting the OTDR signal received from the transmission end, and receiving the return signal returned from the optical fiber.
H04B 10/071 - Dispositions pour la surveillance ou le test de systèmes de transmissionDispositions pour la mesure des défauts de systèmes de transmission utilisant un signal réfléchi, p. ex. utilisant des réflectomètres optiques temporels [OTDR]
H04B 10/2575 - Radio sur fibre, p. ex. signal radio modulé en fréquence sur une porteuse optique
Disclosed is a limited display device. The device comprises a movable assembly, a limiting assembly and a display assembly, wherein the display assembly is fixed in the movable assembly, and the movable assembly is slidably mated with the limiting assembly; the movable assembly comprises a limiting slot, the limiting assembly comprises a limiting rod, one end of the limiting rod is embedded into the limiting slot, and the other end of the limiting rod is fixed to the limiting assembly; when the movable assembly drives the display assembly to slide, the limiting rod synchronously slides along a preset path of the limiting slot, so as to keep a locked state or an unlocked state of the display device. The limited display device is provided on the side close to the inner wall of a case and adopts a hidden drawing mode, so that a display screen of the display device may be completely exposed out of the case or retract back into the case, touch on the display screen by mistake is avoided, and occupation of space of the case in the depth direction is reduced at the same time.
G09F 9/35 - Dispositifs d'affichage d'information variable, dans lesquels l'information est formée sur un support, par sélection ou combinaison d'éléments individuels dans lesquels le ou les caractères désirés sont formés par une combinaison d'éléments individuels à cristaux liquides
An optical fiber adapter, relating to field of optical communication and comprising: a housing with a chamber having a first and second chamber connected with each other and respectively with two opposite ends of the housing; a retaining member integrally formed with the housing and provided within the first chamber, which is enclosed to form an receiving cavity having a first and second openings at one and other ends, respectively, and a third opening extending along a length direction of the retaining member; a retaining cover plate for detachably connecting to the retaining member to seal the third opening; and a ceramic sleeve provided within the receiving cavity and adjacent to the retaining cover plate, which has a third chamber connected with the first and second opening, and is limited within the receiving cavity. The retaining member is an integrated structure, improving the collimation performance of the adapter.
An adapter assembly, relating to field of optical communication and comprising: a housing enclosed to form a chamber; a holding sleeve integrally formed with the housing, in which a receiving chamber is provided, wherein one end of the holding sleeve is provided in the chamber and the other end protrudes from the housing, and wherein the holding sleeve is provided with an opening communicated with the receiving chamber; a clamping member provided in the opening and detachably connected with the holding sleeve; a ceramic sleeve provided within the receiving chamber; and fixing members provided at two ends of the holding sleeve and fixedly connected with the holding sleeve to limit the ceramic sleeve. The axes of holding sleeves are the axes thereof, which avoids multiple holding sleeves from deviating each other due to assembly errors, and ensures that the ceramic sleeve may float freely within the holding sleeve.
Disclosed are a calibration method and apparatus for a coherent light module, and a computer-readable storage medium. The method comprises: obtaining a first and second curve relationship respectively representing a relationship between a power-gain monitoring voltage and optical power of a receiver of the coherent optical module and a relationship between a target setting voltage and the optical power of the receiver in the optical power range of the receiver; determining first optical power based on the first and second curve relationship, which is used for dividing the optical power range of the receiver into two ranges; and determining a calibration mode of the coherent light module based on the first optical power, which comprises: calibrating the coherent light module by using the first curve relationship or the second curve relationship when the optical power of the receiver is in a first range or in a second range.
H04B 10/80 - Aspects optiques concernant l’utilisation de la transmission optique pour des applications spécifiques non prévues dans les groupes , p. ex. alimentation par faisceau optique ou transmission optique dans l’eau
87.
HIGH-ISOLATION LIGHT SOURCE FILLING DEVICE AND METHOD IN WAVELENGTH DIVISION MULTIPLEXING SYSTEM
The present application relates to the technical field of optical communication, and provides a high-isolation light source filling device and method in a wavelength division multiplexing system. The light source filling device comprises a multiplexing WSS and a demultiplexing WSS; a filling light source is provided on an output port, which does not carry a service, of the demultiplexing WSS; the filling light source guides filling light into the output port which does not carry a service; the filling light passes through a second common port of the demultiplexing WSS or a light splitting device provided on a first common port of the demultiplexing WSS; the filling light transmitted through the demultiplexing WSS is guided into an input port, which does not carry a service, of the multiplexing WSS. In the present application, on one hand, high-isolation wide-spectrum noise light filling is implemented, and on the other hand, no additional filter device is provided.
Embodiments of the present disclosure disclose a method and apparatus for detecting the phase difference and delay of a coherent receiver, and a storage medium, the method comprising: acquiring a first group of signals and a second group of signals outputted by a coherent receiver; processing the first group of signals to obtain a first phase difference corresponding to the first group of signals; processing the second group of signals to obtain a second phase difference corresponding to the second group of signals; and obtaining the phase difference and delay of the coherent receiver according to the first phase difference and the second phase difference. By means of the described method, the phase difference and delay detection precision of a coherent receiver may be improved.
H04B 10/079 - Dispositions pour la surveillance ou le test de systèmes de transmissionDispositions pour la mesure des défauts de systèmes de transmission utilisant un signal en service utilisant des mesures du signal de données
89.
METHOD AND APPARATUS FOR REALIZING LOCKING OF PHASE BIAS POINT OF MZ SILICON OPTICAL MODULATOR
The present invention discloses a method and apparatus for realizing the locking of a phase bias point of an MZ silicon optical modulator. The method comprises: inputting an output optical signal of a laser into an MZ silicon optical modulator by means of an optical fiber; the MZ silicon optical modulator respectively importing, by means of light splitting, two optical signals, which are separated from a main optical path, into a first photoelectric detector and a second photoelectric detector, the phase difference between which is 180 degrees, wherein the main optical path serves as an optical path of an output optical signal of the MZ silicon optical modulator; and the first photoelectric detector and the second photoelectric detector respectively outputting a first photocurrent and a second photocurrent, wherein the first photoelectric detector is used for detecting an optical signal, which has the same phase as an output phase of the MZ silicon optical modulator, the second photoelectric detector is used for detecting an optical signal, which has the opposite phase to the output phase of the MZ silicon optical modulator, and when the MZ silicon optical modulator performs Quad point or Null point locking, an adjustment quantity of a thermo-optical phase shifter in the MZ silicon optical modulator is obtained by means of calculating thermal powers of the first photocurrent, the second photocurrent and the thermo-optical phase shifter.
G02F 1/01 - Dispositifs ou dispositions pour la commande de l'intensité, de la couleur, de la phase, de la polarisation ou de la direction de la lumière arrivant d'une source lumineuse indépendante, p. ex. commutation, ouverture de porte ou modulationOptique non linéaire pour la commande de l'intensité, de la phase, de la polarisation ou de la couleur
G02F 1/015 - Dispositifs ou dispositions pour la commande de l'intensité, de la couleur, de la phase, de la polarisation ou de la direction de la lumière arrivant d'une source lumineuse indépendante, p. ex. commutation, ouverture de porte ou modulationOptique non linéaire pour la commande de l'intensité, de la phase, de la polarisation ou de la couleur basés sur des éléments à semi-conducteurs ayant des barrières de potentiel, p. ex. une jonction PN ou PIN
90.
Long-distance optical fiber detecting method, apparatus, device and system, and storage medium
Disclosed are a long-distance optical fiber detecting method, apparatus, device and system, and a storage medium. The method comprises: in response to a detection request of a target node on a to-be-detected optical fiber, determining a first and second sampling sequence that are formed by respectively propagating, on said optical fiber, a first and second optical signal respectively sent from each end of the optical fiber through an OTDR; determining a total length of the optical fiber; generating a detection result according to the first and second sampling sequence and the total length, and sending the detection result to the target node. By determining the first and second sampling sequence and combining the total length of the optical fiber, a detection result of the to-be-detected optical fiber is generated.
H04B 10/071 - Dispositions pour la surveillance ou le test de systèmes de transmissionDispositions pour la mesure des défauts de systèmes de transmission utilisant un signal réfléchi, p. ex. utilisant des réflectomètres optiques temporels [OTDR]
G01M 11/00 - Test des appareils optiquesTest des structures ou des ouvrages par des méthodes optiques, non prévu ailleurs
91.
APR protection method and device, and computer storage medium
Disclosed are an APR protection method and device, and a computer storage medium. A preamplifier PA of each of two optical amplifier units at two ends of a transmission line is connected to a booster amplifier BA of the other amplifier unit by an optical fiber. The method comprises: when a reception state of PA of at least one of two amplifier units is a loss of signal state and a switch chip of said amplifier unit detects a link interruption signal, activating an APR protection state of said amplifier unit which is to turn off BA output of said amplifier unit; when the switch chip of at least one of two amplifier units detects a link conduction signal, deactivating the APR protection state of the present amplifier unit to restore a state of BA of said amplifier unit to a state before the APR protection state is activated.
H04B 10/032 - Dispositions pour le rétablissement de communication après défaillance utilisant des systèmes de travail et de protection
H04B 10/079 - Dispositions pour la surveillance ou le test de systèmes de transmissionDispositions pour la mesure des défauts de systèmes de transmission utilisant un signal en service utilisant des mesures du signal de données
92.
OPTICAL WAVEGUIDE DEVICE AND MANUFACTURING METHOD THEREFOR
The present invention provides an optical waveguide device and a manufacturing method therefor. The optical waveguide device comprises: a substrate, and an optical modulation module electrically connected to the substrate, the optical modulation module comprising: a base, comprising: a first surface and a second surface which are provided opposite to each other, wherein the first surface is relatively close to the substrate, and the second surface is relatively far away from the substrate; an optical waveguide lamination, located between the first surface of the base and the substrate and comprising: a lower cladding layer, an optical waveguide layer, and an upper cladding layer which are stacked in a first direction, wherein the first direction is perpendicular to a plane where the base is located, and the lower cladding layer is located between the first surface of the base and the optical waveguide layer; and a conductive structure, located between the optical waveguide and the substrate and electrically connected to the optical waveguide layer and configured to conduct an electrical signal to the optical waveguide layer.
G02F 1/065 - Dispositifs ou dispositions pour la commande de l'intensité, de la couleur, de la phase, de la polarisation ou de la direction de la lumière arrivant d'une source lumineuse indépendante, p. ex. commutation, ouverture de porte ou modulationOptique non linéaire pour la commande de l'intensité, de la phase, de la polarisation ou de la couleur basés sur des matériaux organiques électro-optiques dans une structure de guide d'ondes optique
Disclosed are a control method and an optical fiber amplifier. The optical fiber amplifier is configured to execute the control method. The method comprises: initially adjusting a target gain on the basis of a first offset gain to obtain the post-initial-adjustment target gain; when the actual power of the pump laser reaches target power determined on the basis of the post-initial-adjustment target gain, obtaining, on the basis of a first signal optical power and a second signal optical power, a second offset gain and a first offset slope through calculation; adjusting again the post-initial-adjustment target gain according to the second offset gain to obtain a adjusted target gain; and adjusting a target slope according to the first offset slope to obtain a adjusted target slope. This solution can provide high precision control for the gain and the slope of the optical fiber amplifier.
H01S 3/10 - Commande de l'intensité, de la fréquence, de la phase, de la polarisation ou de la direction du rayonnement, p. ex. commutation, ouverture de porte, modulation ou démodulation
H01S 3/13 - Stabilisation de paramètres de sortie de laser, p. ex. fréquence ou amplitude
H01S 3/30 - Lasers, c.-à-d. dispositifs utilisant l'émission stimulée de rayonnement électromagnétique dans la gamme de l’infrarouge, du visible ou de l’ultraviolet utilisant des effets de diffusion, p. ex. l'effet Brillouin ou Raman stimulé
H04B 10/291 - Répéteurs dans lesquels le traitement ou l’amplification est effectuée sans conversion de la forme optique du signal
H04B 10/294 - Commande de la puissance du signal dans un système à plusieurs longueurs d’onde, p. ex. égalisation du gain
H04B 10/296 - Commande de la puissance de signal transitoire, p. ex. du à l’insertion/extraction de canaux ou à des fluctuations rapides du courant d’alimentation
An optical port assembly (1) and an optical module, relating to the field of optical communications. The optical port assembly (1) comprises a connecting piece (100), an adaptation piece (200), and a shielding piece (300). The connecting piece (100) is connected to an optical fiber (110). The adaptation piece (200) has an accommodation cavity (210). The connecting piece (100) extends into the accommodation cavity (210) to be fixed. The shielding piece (300) has a hollow matching cavity (310). The adaptation piece (200) extends into the matching cavity (310) to fixedly connect the adaptation piece (200) and the shielding piece (300). The shielding piece (300) is wrapped on the adaptation piece (200) to define the relative position of the shielding piece (300) and the adaptation piece (200), thereby defining the relative position of the shielding piece (300) and the optical fiber (110), and thus defining the position of an opening (330) on the shielding piece (300) for allowing the optical fiber (110) to pass through. The relative position of the opening (330) and the optical fiber (110) is fixed; therefore, the size of the opening (330) can be set to be approximately identical to the size of the cross-section of the optical fiber (110), so as to minimize the opening (330) and reduce the electromagnetic leakage at the opening (330).
The present application discloses an active optical cable assembly and an assembling method thereof. The active optical cable assembly comprises an optical fiber connector, an optical port adapter, and an optical transceiver which are sequentially connected. The optical fiber connector is connected to the optical port adapter in a pluggable manner. The optical fiber connector comprises a movable kit, and a tail sleeve, an intermediate connecting sleeve, and a plug connector which are sequentially connected. The movable kit is sleeved on the outer side of the plug connector, and is used for preventing the plug connector from detaching from the optical port adapter after the plug connector is inserted into the optical port adapter. A blocking member is disposed between the tail sleeve and the movable kit, and is used for preventing the movable kit from sliding backwards. When the blocking member is removed and the movable kit is slid backwards to the intermediate connecting sleeve, the plug connector can be pulled out of the optical port adapter. In the structure, the optical fiber connector is connected to the optical transceiver in a pluggable manner, so that the optical transceiver is not connected to the optical cable during assembly, and the problem of optical cable scrapping caused by inconvenient assembly of the optical transceiver can be solved.
A wavelength selective switch, including: an optical fiber array, an optical signal processing device and an output selection device. The optical fiber array includes multiple dual-core optical fibers arranged in parallel, one dual-core optical fiber being used for inputting two optical signals; the optical signal processing device is located at an output end of the optical fiber array and is used for splitting the two optical signals into sub-signals of different wavelengths and projecting the sub-signals of different wavelengths to different spectral band regions in the output selection device; and the output selection device is located at the rear end of the optical signal processing device, and is used for processing the sub-signals projected to the spectral band regions, so as to respectively perform output selection on the sub-signals split from two optical signals, thereby achieving a dual-switch function.
An optical module for use in an optical communication device, the optical module comprising an optical interface (2), an electrical interface assembly (3), a light source (4), and a circuit board (5). The light source (4) is electrically connected to the circuit board (5). The optical interface (2) is coupled to the light source (4). The electrical interface assembly (3) comprises a fixed base (31) and a floating member (32). The fixed base (31) and the circuit board (5) are fixed relative to one another. The floating member (32) is movably arranged on the fixed base (31), the floating member (32) being electrically connected to the circuit board (5), the floating member (32) being capable of floating relative to the circuit board (5), and the floating member (32) being used for supplying power to the light source (4). The mechanical stress generated by the plugging and unplugging of the floating member (32) is released by the floating of the floating member (32), thereby avoiding the mechanical stress being transmitted to the optical interface (2) by means of the circuit board (5), so that the optical interface (2) can be coupled with as little external interference as possible and the objective of increasing the coupling precision of the optical interface (2) is achieved.
A drive circuit for a direct modulated laser and a direct modulated optical transmitter. The drive circuit includes a service data drive unit, a voltage configuration unit, a monitoring data modulation unit, and a monitoring current generation unit. Output terminals of the voltage configuration unit and the monitoring data modulation unit are connected to a same input terminal of the monitoring current generation unit. An output terminal of the service data drive unit is connected to a current sink interface of the monitoring current generation unit, and is suitable for connecting a direct modulated laser. In the technical solution, a low-speed monitoring data signal is mixed into an average optical power signal of a high-speed service data light wave from the direct modulated laser, then is extracted from the received optical signal by a remote optical receiver, enabling the drive circuit to be remotely monitored.
The present application discloses an active optical cable. The active optical cable comprises: an optical cable; optical modules, which are disposed at two ends of the optical cable, and which are optically coupled to the optical cable, at least one optical module being detachably connected to the optical cable; a first connection terminal which is connected to one end of the optical cable and is optically coupled to the optical cable; a second connection terminal which is connected to the optical modules and is optically coupled to the optical modules, the first connection terminal being optically coupled to the second connection terminal; and a connecting sleeve, wherein the connecting sleeve is connected between the optical cable and the second connection terminal, the connecting sleeve keeps the first connection terminal and the second connection terminal in an optically coupled state, and at least one of the optical cable or the second connection terminal is detachably connected to the connecting sleeve.
A method and an apparatus for controlling the wavelength of an optical module, and a storage medium, the method comprising: determining an initial temperature compensation curve corresponding to a transmitter optical subassembly TOSA in an optical module (S101); according to the current ambient temperature and the initial temperature compensation curve, acquiring a first control voltage to be applied to a TEC; on the basis of the first control voltage, controlling the TOSA to emit a first light wave, the wavelength of the first light wave being a first wavelength (S102); when the first wavelength does not satisfy a set range, adjusting the control voltage applied to the TEC until the control voltage applied to the TEC reaches a second control voltage, the second control voltage being capable of controlling the TOSA to emit a second light wave at the current ambient temperature, and the wavelength of the second light wave being a second wavelength satisfying the set range; and, on the basis of the second control voltage, updating the initial temperature compensation curve (S103).
