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 - Two-part coupling devices, or either of their cooperating parts, characterised by their overall structure having concentrically or coaxially arranged contacts specially adapted for high frequency specially adapted for specific shapes of cables, e.g. corrugated cables, twisted pair cables, cables with two screens or hollow cables
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 - Arrangements specific to fibre transmission
G02B 6/293 - Optical coupling means having data bus means, i.e. plural waveguides interconnected and providing an inherently bidirectional system by mixing and splitting signals with wavelength selective means
H04J 14/02 - Wavelength-division multiplex systems
4.
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 - Optical coupling means having data bus means, i.e. plural waveguides interconnected and providing an inherently bidirectional system by mixing and splitting signals with wavelength selective means
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.
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 - Optical coupling means having data bus means, i.e. plural waveguides interconnected and providing an inherently bidirectional system by mixing and splitting signals with wavelength selective means
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 - Arrangements for monitoring or testing transmission systemsArrangements for fault measurement of transmission systems using an in-service signal using measurements of the data signal
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 - Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulatingNon-linear optics for the control of the intensity, phase, polarisation or colour based on ceramics or electro-optical crystals, e.g. exhibiting Pockels or Kerr effect in an optical waveguide structure
14.
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, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range using scattering effects, e.g. stimulated Brillouin or Raman effects
H04B 10/2537 - Arrangements specific to fibre transmission for the reduction or elimination of distortion or dispersion due to scattering processes, e.g. Raman or Brillouin scattering
H04B 10/077 - Arrangements for monitoring or testing transmission systemsArrangements for fault measurement of transmission systems using an in-service signal using a supervisory or additional signal
16.
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 - Arrangements for monitoring or testing transmission systemsArrangements for fault measurement of transmission systems using an in-service signal using measurements of the data signal
21.
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 - Light guidesStructural details of arrangements comprising light guides and other optical elements, e.g. couplings of the optical waveguide type of the integrated circuit kind
G02B 6/124 - Geodesic lenses or integrated gratings
G02B 6/293 - Optical coupling means having data bus means, i.e. plural waveguides interconnected and providing an inherently bidirectional system by mixing and splitting signals with wavelength selective means
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.
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 - Arrangements for monitoring or testing transmission systemsArrangements for fault measurement of transmission systems using an in-service signal using a supervisory or additional signal
27.
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 - Measuring temperature based on physical or chemical changes not covered by group , , , or using changes in transmittance, scattering or luminescence in optical fibres at discrete locations in the fibre, e.g. using Bragg scattering
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.
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 - Devices sensitive to infrared, visible or ultraviolet radiation characterised by only one potential barrier or surface barrier the potential barrier working in avalanche mode, e.g. avalanche photodiode
37.
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 (1), a refractive element group (2), an optical isolation element group (3), and an optical fiber array (4), wherein the refractive element group (2) and the optical isolation element group (3) are sequentially arranged on a same optical path; an incident signal light from each single-fiber bidirectional optical fiber interface (1) sequentially passes through the refractive element group (2) and the optical isolation element group (3), then is output by a corresponding outgoing optical fiber (43, 44) of the optical fiber array (4); the incident signal light from each incident optical fiber (41, 42) of the optical fiber array (4) sequentially passes through the optical isolation element group (3) and the refractive element group (2), and is output by the corresponding single-fiber bidirectional optical fiber interface (1). Multiple optical circulators are integrated within the volume of a same optical circulator, thereby reducing the volume occupied by optical circulators in an overall device, lowering the overall cost of the device, and improving the convenience of optical path integration.
G02F 1/095 - Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulatingNon-linear optics for the control of the intensity, phase, polarisation or colour based on magneto-optical elements, e.g. exhibiting Faraday effect in an optical waveguide structure
G02F 1/09 - Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulatingNon-linear optics for the control of the intensity, phase, polarisation or colour based on magneto-optical elements, e.g. exhibiting Faraday effect
41.
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 - Wavelength-division multiplex systems
H04B 10/079 - Arrangements for monitoring or testing transmission systemsArrangements for fault measurement of transmission systems using an in-service signal using measurements of the data signal
CHINA INFORMATION COMMUNICATION TECHNOLOGIES GROUP CORPORATION (China)
Inventor
Yin, Hualin
Chu, Shijie
Tan, Shuwei
Zhou, Yuan
Abstract
A lens clamping device (1), relating to the field of optical communication devices, comprises: a base (2); a sliding mechanism (3) slidably connected with the base (2) and movable relative to the base along a first direction; a transmission mechanism (4) connected with the sliding mechanism and having a first (41) and a second clamping member (42) capable of relatively away from and close to each other along a second direction perpendicular to the first direction; and a suction nozzle (5) 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 - Arrangements for monitoring or testing transmission systemsArrangements for fault measurement of transmission systems using a reflected signal, e.g. using optical time domain reflectometers [OTDR]
H04B 10/2575 - Radio-over-fibre, e.g. radio frequency signal modulated onto an optical carrier
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 - Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements being liquid crystals
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 - Optical aspects relating to the use of optical transmission for specific applications, not provided for in groups , e.g. optical power feeding or optical transmission through water
49.
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 - Arrangements for monitoring or testing transmission systemsArrangements for fault measurement of transmission systems using an in-service signal using measurements of the data signal
51.
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 - Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulatingNon-linear optics for the control of the intensity, phase, polarisation or colour
G02F 1/015 - Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulatingNon-linear optics for the control of the intensity, phase, polarisation or colour based on semiconductor elements having potential barriers, e.g. having a PN or PIN junction
52.
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 - Arrangements for monitoring or testing transmission systemsArrangements for fault measurement of transmission systems using a reflected signal, e.g. using optical time domain reflectometers [OTDR]
G01M 11/00 - Testing of optical apparatusTesting structures by optical methods not otherwise provided for
53.
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 - Arrangements for fault recovery using working and protection systems
H04B 10/079 - Arrangements for monitoring or testing transmission systemsArrangements for fault measurement of transmission systems using an in-service signal using measurements of the data signal
54.
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 - Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulatingNon-linear optics for the control of the intensity, phase, polarisation or colour based on electro-optical organic material in an optical waveguide structure
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 correcting a target gain on the basis of a first compensation gain to obtain an initially corrected target gain; when the actual power of the pump laser reaches target power determined on the basis of the initially corrected target gain obtaining, on the basis of a first signal optical power and a second signal optical power, a second compensation gain and a first compensation slope through calculation; correcting the initially corrected target gain again according to the second compensation gain to obtain a corrected target gain; and correcting a target slope according to the first compensation slope to obtain a corrected target slope. This solution can provide high precision control for the gain and the slope of the optical fiber amplifier.
H01S 3/13 - Stabilisation of laser output parameters, e.g. frequency or amplitude
H01S 3/10 - Controlling the intensity, frequency, phase, polarisation or direction of the emitted radiation, e.g. switching, gating, modulating or demodulating
H04B 10/296 - Transient power control, e.g. due to channel add/drop or rapid fluctuations in the input power
H04B 10/291 - Repeaters in which processing or amplification is carried out without conversion of the main signal from optical form
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).
Disclosed is a wavelength selecting system, the system at least comprising a first polarizing light beam splitting component, a first sub-lens, a first reflecting mirror, a second sub-lens, a first prism and a first dividing device, wherein a first light beam is incident to the first polarizing light beam splitting component and is then split into a first polarized light beam and a second polarized light beam by the first polarizing light beam splitting component; the first polarized light beam and the second polarized light beam respectively pass through the first sub-lens and the first reflecting mirror, and are then incident to the first prism in a parallel manner by means of the second sub-lens; the first prism converts the first polarized light beam into a second light beam, and converts the second polarized light beam into a third light beam; the second light beam and the third light beam are respectively reflected by the second sub-lens and the first reflecting mirror and are then incident to the first dividing device; light beams included in the second light beam and the third light beam have the same wavelength; and different areas of the first dividing device receive light beams of different wavelengths.
G02B 6/293 - Optical coupling means having data bus means, i.e. plural waveguides interconnected and providing an inherently bidirectional system by mixing and splitting signals with wavelength selective means
G02B 6/35 - Optical coupling means having switching means
Provided is a multi-channel light-receiving module, which comprises an incident collimator, a light-splitting assembly, an optical path conversion assembly and a photoelectric chip array which are arranged in sequence, wherein the light-splitting assembly comprises an inner reflector and a plurality of optical filters, and the optical filters are respectively arranged on an output end of the inner reflector; the channel interval of photoelectric chips in the photoelectric chip array is less than the channel interval of an adjacent optical filter; the optical path conversion assembly comprises a plurality of emergent collimators and an optical fiber connected to each of the emergent collimators; a plurality of paths of optical signals output by the light-splitting assembly are respectively coupled into corresponding optical fibers after passing through the plurality of emergent collimators; and the plurality of paths of optical signals are output by output ends of the plurality of optical fibers and are then coupled to the photoelectric chip array. By means of the light-receiving module, an optical path component is converted into a small channel interval of photoelectric chips from a large channel interval of optical filters, the problem of it being difficult to match the channel interval of optical filters and the channel interval of photoelectric chips is solved, the cost of photoelectric chips is reduced, and the assembly difficulty of optical filters is also reduced.
G02B 6/293 - Optical coupling means having data bus means, i.e. plural waveguides interconnected and providing an inherently bidirectional system by mixing and splitting signals with wavelength selective means
G02B 6/42 - Coupling light guides with opto-electronic elements
Disclosed are an optical module, an optical communication device and an optical transmission system. The optical module includes a housing; a main board where are arrange a first transmitting unit and a first receiving unit; a first optical circulator, a first port of which is connected to an output end of the first transmitting unit, and a third port of which is connected to an input end of the first receiving unit; and a first optical fiber adapter connected to a second port of the first optical circulator, wherein an optical signal from the output end of the first transmitting unit is transmitted to the second port along the first port of the first optical circulator; and the first optical fiber adapter receives an optical signal input from outside, and transmits it to the third port along the second port of the first optical circulator.
Provided in the embodiments of the present disclosure are an adjustable all-optical shaper, and a parameter determination method and apparatus for an adjustable all-optical shaper. The shaper comprises: an MZI shaping module, a first directional coupler and a second directional coupler. The MZI shaping module comprises: an upper arm and a lower arm. Output ends of the first directional coupler are respectively connected to input ends of the MZI shaping module. The upper arm comprises: a non-linear optical fiber and an adjustable optical phase shifter, and is used for performing non-linear phase shift on one of two optical signals by means of the non-linear optical fiber, and for performing, by means of the adjustable optical phase shifter, phase shift with a preset phase-shift value on the optical signal which has been subjected to the non-linear phase shift. The lower arm comprises a linear optical fiber, and is used for performing linear phase shift on one of the two optical signals by means of the linear optical fiber. Input ends of the second directional coupler are connected to the upper arm and the lower arm of the MZI shaping module.
G02F 1/21 - Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulatingNon-linear optics for the control of the intensity, phase, polarisation or colour by interference
Provided in the embodiments of the present disclosure are an all-optical shaper, and a parameter determination method and apparatus for an all-optical shaper. The shaper comprises: an MZI shaping module, a first directional coupler and a second directional coupler, wherein the MZI shaping module comprises: an upper arm and a lower arm arranged side by side with the upper arm; output ends of the first directional coupler are respectively connected to input ends of the MZI shaping module and are used to decompose an input optical signal into two optical signals, wherein non-linear phase shift is performed on one of the two optical signals by means of the upper arm, and linear phase shift is performed on the other one of the two optical signals by means of the lower arm; and input ends of the second directional coupler are connected to the upper arm and the lower arm of the MZI shaping module to couple the two optical signals output by the upper arm and the lower arm, so as to obtain a shaped optical signal.
The embodiments of the present disclosure provide a method and apparatus for determining performance parameters of a regenerator, a device and a storage medium. Said method comprises: determining a reshaping power transfer function and a reamplification gain of the regenerator according to a power transfer function of a regenerator, the reamplification gain being used for indicating the reamplification performance of the regenerator; and determining a reshaping differential gain of the regenerator according to the reshaping power transfer function of the regenerator, the reshaping differential gain being used for indicating the reshaping performance of the regenerator.
An optical-path-displacement-compensation-based emission optical power stabilization assembly, comprising: a laser, a lens, and an optical fiber coupling port disposed on a first substrate and a second substrate according to a preset arrangement scheme, wherein an expansion coefficient of the second substrate is larger than that of the first substrate, and the preset arrangement scheme enables initial distances between the laser and the lens, between the lens and the optical fiber coupling port, and/or between the laser and the optical fiber coupling port to differ from respective optical coupling distances from an optical coupling point by a preset value, thereby ensuring that a coupling loss on an optical path changes along with the temperature, forming a complementary effect with respect to an optical power-temperature curve of the laser, which reduces a temperature-caused fluctuation of the emission optical power of an optical assembly.
H04B 10/00 - Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
G02B 6/42 - Coupling light guides with opto-electronic elements
70.
PHOTOELECTRIC HYBRID CONNECTOR AND PHOTOELECTRIC HYBRID ADAPTER
A photoelectric hybrid connector and a photoelectric hybrid adapter. The photoelectric hybrid connector comprises: a housing assembly (1), wherein the housing assembly (1) comprises an accommodation space (11) which is penetrable from front to back; a light guide assembly (2), which comprises a tail handle (21), an insert core (22) and an optical fiber (23), wherein the insert core (22) is disposed at one end of the tail handle (21), the tail handle (21) is disposed in the accommodation space (11), and the optical fiber (23) sequentially penetrates the tail handle (21) and the insert core (22); and a conductive assembly (3), which comprises at least one conductive pin (31) and a cable (32) connected to the conductive pin (31), wherein the conductive pin (31) and the insert core (22) are located on the same side of the accommodation space (11). The conductive pin (31) and the insert core (22) share one insertion part on the same side, and a photoelectric channel can be established by means of one instance of insertion, so that the insertion operation of the photoelectric hybrid connector can be simplified.
Disclosed in embodiments of the present application is a photoelectric composite optical module, comprising: a housing assembly having a through accommodation cavity, a first port and a second port being formed on both ends of the accommodation cavity, respectively; a photoelectric processing assembly placed in the accommodation cavity and configured to convert an optical signal into an electrical signal and emit the optical signal and/or the electrical signal; and a power transmission structure placed in the accommodation cavity, both ends of the power transmission structure extending to the first port and the second port, respectively, and the power transmission being configured to be powered on between the first port and the second port. The photoelectric composite optical module of the embodiments of the present application has the advantages of saving wiring and reducing the workload of operators.
A multi-channel pre-alignment system and method based on machine vision. The multi-channel pre-alignment system comprises: a visual device (1), a displacement device (2), and a data processing device (3). The displacement device (2) comprises at least one angle shaft (21), and a clamp (22) is mounted on the angle shaft (21), the clamp (22) being used for fixing an optical fiber array (4) to be subjected to coupling alignment; the data processing device (3) is used to send a driving instruction to the displacement device (2) so as to sequentially drive the angle shaft (21) to move to a specified axis coordinate position; when the angle shaft (21) is at the specified axis coordinate position, the visual device (1) is used to acquire target images of the optical fiber array (4) and send the target images to the data processing device (3); and the data processing device (3) is also used to compare multiple target images to determine a pre-alignment position of the angle shaft (21) and drive the angle shaft (21) to move to the pre-alignment position. According to the method, a contactless and end-face-lossless quick coupling and positioning solution for automatic coupling of planar waveguides can be implemented without multi-axis linkage and real-time monitoring of an optical power value.
The present application discloses an O-band tunable optical module. The O-band tunable optical module comprises: a microprocessor circuit, a select switch and a transmitter optical subassembly (TOSA). The TOSA comprises a plurality of laser devices, and different laser devices respectively cover different wavelength ranges, the microprocessor circuit comprises a select signal port and a current signal port, and the select switch comprises a common port, a control port and a plurality of output ports. The select signal port is connected to the control port, the current signal port is connected to the common port, and the output ports are respectively connected to the corresponding laser devices. The microprocessor circuit is configured to control the common port of the select switch to be selectively connected to a corresponding output port, so as to connect the current signal port to a corresponding laser device; and the microprocessor circuit is configured to input a current signal to the corresponding laser device by means of the current signal port, so as to turn on the corresponding laser device.
Disclosed is a TO package structure, comprising: a TO base, a TO ground electrode, a signal binding post, a signal binding post carrier and a gold wire lead, wherein the TO ground electrode and the signal binding post are provided on the TO base; the signal binding post carrier is arranged on the surface of the signal binding post, and the signal binding post carrier is connected to the TO ground electrode by means of the gold wire lead; and the structure is encapsulated in a closed cavity. A TO ground electrode is directly connected to a signal binding post carrier on a signal binding post by means of a gold wire lead, such that passing through a TO base is avoided, and the distance from a signal line to the ground is reduced; a reference ground electrode of the entire TO package structure is unified, and the signal binding post carrier has capacitive features, so that the signal binding post carrier can interact with a inductor of the signal binding post, such that the impedance between the signal binding post and the TO base is reduced, better impedance matching is achieved, the signal reflection is reduced, and higher-frequency signal transmission is achieved.
An optical module (100) and a preparation method therefor. The optical module (100) comprises: a first optical port (103), a second optical port (104), a waveguide chip (105), a light emitting unit (106), and a light detection unit (107). The waveguide chip (105) comprises a substrate (210), a cladding layer (240), and a waveguide core layer (220) which is located between the substrate (210) and the cladding layer (240). The waveguide core layer (220) comprises a light-combining optical path portion (221) and a light-splitting optical path portion (222). The light emitting unit (106), the light-combining optical path portion (221), and the first optical port (103) are optically coupled and connected to each other in sequence. The second optical port (104), the light-splitting optical path portion (222), and the light detection unit (107) are optically coupled and connected to each other in sequence. The optical module (100) integrates an optical emission device and an optical receiving device as a whole, thereby simplifying a packaging method and realizing high integration, miniaturization and low costs, and is also suitable for 100G, 200G and 400G to 800G high-speed optical modules.
Disclosed are a thermal tuning semiconductor chip and a preparation method therefor. The thermal tuning semiconductor chip comprises: a substrate, and a sacrificial layer and a functional layer, which are sequentially stacked on the substrate, the functional layer being used for transferring heat to a thermal tuning electrode of the thermal tuning semiconductor chip, wherein a floating area is formed in between the substrate and the sacrificial layer, and the floating area is a cavity structure that penetrates through the sacrificial layer and terminates inside the substrate, such that by means of the floating area, the functional layer located above the cavity structure is isolated from the remaining part of the substrate that is below the cavity structure.
An optical module, comprising: a pull tab (1), an unlocking body (2) and a first outer cover (3), wherein the pull tab (1) comprises a driving part (11); the unlocking body (2) is arranged on the driving part (11); the first outer cover (3) is arranged on the unlocking body (2); the unlocking body (2) comprises an unlocking bump (20) and a first stress surface (21) and a second stress surface (22); and the first outer cover (3) is provided with a lock hole (30). The driving part (11) is configured to selectively apply an external force to the first stress surface (21) or the second stress surface (22) under an external force, thereby switching the position of the unlocking bump (20) relative to the lock hole (30). When the driving part (11) applies the external force to the first stress surface (21), the unlocking bump (20) is coupled to the lock hole (30), and the optical module is in a locked state. When the driving part (11) applies the external force to the second stress surface (22), the unlocking bump (20) goes down, the unlocking bump (20) is decoupled from the lock hole (30), and the optical module is in an unlocked state. The driving part (11) on the pull tab (1) selectively applies an external force to the first stress surface (21) or the second stress surface (22) of the unlocking body (2) to switch the position of the unlocking bump (20) relative to the lock hole (30), so that the function of unlocking or locking is achieved. The unlocking structure is simple, and the operation is easy.
A coherent receiving device (310) and an anemometry lidar system. The coherent receiving device (310) comprises: a polarization maintaining optical fiber pin (110), configured to receive local oscillation light and output same to a frequency mixer (130, 230); a polarization beam splitter prism (120, 220), configured to receive signal light, split the signal light into first signal light and second signal light, and output the first signal light and the second signal light to the frequency mixer (130, 230); the frequency mixer (130, 230), configured to respectively mix the first signal light and the second signal light with the local oscillation light and output the mixed light to a PD array (140, 240); the PD array (140, 240), configured to perform photoelectric conversion on the mixed light to obtain a differential current signal; and a signal processing circuit (150, 250), configured to convert the differential current signal to obtain a differential voltage signal, wherein the derivation formula of the differential voltage signal comprises a part of the frequency difference between the signal light and the local oscillation light, detect the frequency of the differential voltage signal to obtain the value of the frequency difference between the signal light and the local oscillation light, and obtain the Doppler frequency shift amount of the signal light according to the value of the frequency difference between the signal light and the local oscillation light.
The present disclosure relates to a single-optical-fiber bidirectional transceiving device and an optical fiber communication system. The single-optical-fiber bidirectional transceiving device comprises: an optical input port, an optical output port, and a composite optical transmission port, wherein the optical input port is configured to output an input transmitting signal to the composite optical transmission port, the optical output port is configured to output a receiving signal inputted from the composite optical transmission port, and the composite optical transmission port is configured to be coupled to an optical fiber; a bidirectional optical transmission assembly, configured to transmit the receiving signal inputted from the composite optical transmission port to an optical guide assembly and transmit a transmitting signal outputted from the optical guide assembly to the composite optical transmission port; and the optical guide assembly, configured to transmit the transmitting signal inputted from the optical input port to the bidirectional optical transmission assembly and transmit a receiving signal outputted from the bidirectional optical transmission assembly to the optical output port. Thus, a bidirectional optical transceiving function can be achieved by means of a single optical fiber.
Provided are a method and system for controlling a Raman fiber amplifier. The method comprises: according to a target gain and a tilt, calculating an expected output power of a pump by using a feedforward formula, and obtaining an actual output power of the pump through detection (201); locking the actual output power of the pump to the expected output power through first-stage feedback control (202); according to the target gain and the tilt, calculating an expected ASE power of the pump by using an ASE formula, and obtaining an actual out-of-band ASE power of the pump through detection (203); if the out-of-band ASE is not locked, determining gain compensation and tilt compensation of the pump through second-stage feedback control, and feeding the compensation back to the feedforward formula and the ASE formula for recalculation (204); and repeatedly performing the first-stage feedback control and the second-stage feedback control until the gain and the tilt are locked (205). In the system, a combination of feedforward and multi-closed loop feedback control is used to realize rapid locking of a pump power and locking of the gain and the tilt compensation, which improves the control precision of the gain and the tilt and accelerates a response speed.
H01S 3/13 - Stabilisation of laser output parameters, e.g. frequency or amplitude
H01S 3/30 - Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range using scattering effects, e.g. stimulated Brillouin or Raman effects
A wavelength locker and a tunable laser component. The wavelength locker comprises a beam-splitting unit (10), a first photoelectric detector (2), and a second photoelectric detector (3). The beam-splitting unit (10) comprises a light incident surface, a first light exit surface, and a second light exit surface. The light incident surface and the light exit surfaces are coated with reflective dielectric films of a same reflectivity, thus constituting a reflective cavity mirror of an etalon. The beam-splitting unit (10) is used for splitting a linearly polarized light received into a first linearly polarized light and a second linearly polarized light. The first linearly polarized light is received by the first photoelectric detector (2) when transmitted from the first light exit surface. The second linearly polarized light is received by the second photoelectric detector (3) when transmitted from the second light exit surface. The ratio of electric signals generated by the first photoelectric detector (2) and the second photoelectric detector (3) forms a frequency discrimination signal. With the integration of a light-splitting function and the etalon, the structure is simple, the layout is compact, the footprint is small, and this is particularly suitable for integration into a miniaturized package of a nanoscale ultracompact tunable laser component.
Disclosed are an online program update method and device for an optical amplifier. The method comprises: when a program update instruction is sent, a Microcontroller Unit MCU receiving update programs of MCU and a programmable logic device FPGA, storing them in a program memory device, and sending an update instruction to FPGA; FPGA terminating; operations of a digital-to-analog converter DAC according to the instruction and a current state remaining unchanged; MCU loading new codes of MCU and FPGA while DAC remains in state of halting refreshing; and after MCU and FPGA run the new codes, reading previously stored data, and starting switching from a previous operation state to enter normal operation state. On basis of conventional optical amplifier control, the invention combines characteristics of MCU and FPGA, and ensures uninterrupted service of optical amplifiers, achieving smooth transition of services, thereby improving stability and reliability of whole optical communications systems.
H01S 3/10 - Controlling the intensity, frequency, phase, polarisation or direction of the emitted radiation, e.g. switching, gating, modulating or demodulating
83.
POWER ADJUSTMENT METHOD AND APPARATUS, AND STORAGE MEDIUM
A power adjustment method and apparatus, and a storage medium. The method comprises: detecting the down-wave power of at least one down-wave optical signal and the up-wave power of at least one up-wave optical signal; calculating the original power of the at least one down-wave optical signal according to the down-wave power of the at least one down-wave optical signal and a down-wave insertion loss of the at least one down-wave optical signal; calculating the transmission power of a non-down-wave optical signal according to the original power of the at least one down-wave optical signal and a transmission insertion loss of the non-down-wave optical signal; and for each of the at least one up-wave optical signal, adjusting the up-wave power of the up-wave optical signal according to a target up-wave power and the transmission power of the non-down-wave optical signal, wherein the target up-wave power is the up-wave power of the up-wave optical signal or the average up-wave power of the at least one up-wave optical signal.
Disclosed in the present application are a parameter adjustment method and apparatus, an electronic device, and a storage medium. The method comprises: obtaining the spectral power, after the power is amplified, of at least one of N wavelength channels, for transmitting a service signal, of the output end of a wavelength selective switch, wherein for each of the N wavelength channels, the wavelength selective switch adjusts the power of a corresponding wavelength channel according to a first parameter corresponding to the corresponding wavelength channel; and according to the obtained spectral power, adjusting the first parameter corresponding to at least one of the N wavelength channels.
An optical signal adjustment apparatus, device and method, and a storage medium. The optical signal adjustment apparatus (1) comprises: a differential operation circuit (11), a feedforward amplification circuit (12) and a control circuit (13), wherein an input end of the control circuit (13) is 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, so as to obtain a differential value; the feedforward amplification circuit (12) is configured to perform feedforward amplification on the input optical signal, so as 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, so as to obtain an adjusted output optical signal.
Provided is a device for adjusting a wavelength. The device for adjusting a wavelength comprises: a light source, which is configured to generate a first light signal; a filtering element, which is plated with a film layer, and is configured to filter a backscattered light signal of the first light signal; and a backlight monitoring detector, which is configured to measure the power of the backscattered light signal which has passed through the filtering element, wherein the power is related to the wavelength of the first light signal.
H01S 3/00 - Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range
H01S 3/10 - Controlling the intensity, frequency, phase, polarisation or direction of the emitted radiation, e.g. switching, gating, modulating or demodulating
H01S 3/13 - Stabilisation of laser output parameters, e.g. frequency or amplitude
87.
COMMUNICATION STATION, OPTICAL COMMUNICATION SYSTEM, DATA TRANSMISSION METHOD, AND STORAGE MEDIUM
Provided in the embodiments of the present disclosure are a communication station, an optical communication system, a data transmission method, and a storage medium. The communication station is a first station and comprises: a first reconfigurable optical add-drop multiplexing (ROADM) device, comprising a first port, which can be used to connect a cable in a first direction of a network; a second ROADM device, which is connected to the first ROADM device and which comprises a second port, which can be used to connect a cable in a second direction of the network, the second direction being different from the first direction; an optical protection device, which is connected to each of the first ROADM device and the second ROADM device and is used to control the first station to, by means of transmission from the first direction corresponding to the first ROADM device, perform communication of a corresponding service with a second station, or, by transmission from the second direction corresponding to the second ROADM device, perform communication of a corresponding service with the second station.
The present invention provides an optical time domain reflectometer (OTDR), a test system, a test method, and a storage medium. The OTDR comprises: an input end, used for receiving an input service optical signal; a first filter, connected to the input end and used for filtering out an interference signal having a wavelength equal to a test wavelength of the OTDR in the service optical signal; a wavelength division multiplexing (WDM) device, which has a reflection end, a transmission end and an output end; an OTDR basic unit, connected to the transmission end and used for transmitting an OTDR signal having a wavelength equal to the test wavelength and receiving a return signal of the OTDR signal; and an output end of the WDM device, used for outputting the 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 - Arrangements for monitoring or testing transmission systemsArrangements for fault measurement of transmission systems using a reflected signal, e.g. using optical time domain reflectometers [OTDR]
H04B 10/25 - Arrangements specific to fibre transmission
H04B 10/2575 - Radio-over-fibre, e.g. radio frequency signal modulated onto an optical carrier
Provided in the embodiments of the present application are an optical communication circuit and method. The optical communication circuit comprises: a driving apparatus, a light-emitting device, a wavelength sensitive diaphragm, a detection device, and a control apparatus; the detection device is configured to monitor the optical power of light, which is emitted by the light-emitting device, after passing through the wavelength sensitive diaphragm; the control apparatus is configured to determine the total variation between said optical power and the standard optical power of the light-emitting device; the total variation comprises: a first variation of the light-emitting device generated due to a wavelength shift and a second variation generated by a change in current of the driving apparatus; the control apparatus is configured to, according to the total variation and a predetermined first numerical relationship, determine the wavelength of the light-emitting device; and the first numerical relationship represents the numerical relationship between the first variation and the second variation. Therefore, wavelength monitoring can be achieved without needing to use a Fabry-Perot (FP) lock. The described circuit has the characteristics of a simple structure, small volume and low costs.
H04B 10/079 - Arrangements for monitoring or testing transmission systemsArrangements for fault measurement of transmission systems using an in-service signal using measurements of the data signal
90.
LIGHT RECEIVING DEVICE AND MANUFACTURING METHOD THEREFOR
A light receiving device and a manufacturing method therefor. The light receiving device comprises a circuit board (1), a PD assembly (2), an SOA assembly (3), a bonding bridge and section frame assembly (4) and a gold wire group (5). The PD assembly (2) comprises a PD chip (21) and a first lens group (22), and the SOA assembly (3) comprises an SOA chip (31), a second lens group (32) and a refrigerator (33). The bonding bridge and section frame assembly (4) is provided between the circuit board (1) and the SOA assembly (3). The gold wire group (5) is arranged on the upper part of the light receiving device, and is used for realizing the electrical connection between the SOA assembly (3) and the circuit board (1). Incident light passes through the SOA chip (31), the second lens group (32) and the first lens group (22) in turn and is transmitted to the PD chip (21), and the PD chip (21) is configured to convert an optical signal into an electric signal. The SOA assembly (3) is integrated to increase the distance of information transmission, and the gold wire group (5) is arranged in the upper space of the light receiving device without changing the lateral size thereof, so that the normal proceeding of the gold wire bonding process is not affected, improving the yield of the light receiving device integrated with the SOA assembly (3).
H01L 23/49 - Arrangements for conducting electric current to or from the solid state body in operation, e.g. leads or terminal arrangements consisting of soldered or bonded constructions wire-like
An integrated optical circulator, comprising at least two single-fiber bidirectional optical fiber interfaces (1), a refractive element group (2), an optical isolation element group (3), and an optical fiber array (4), specifically: the refractive element group (2) and the optical isolation element group (3) are sequentially arranged on the same optical path; an incoming signal light from each single-fiber bidirectional optical fiber interface (1) sequentially passes through the refractive element group (2) and the optical isolation element group (3), and is emitted by a corresponding outgoing optical fiber (43, 44) of the optical fiber array (4); an incoming signal light from each incoming optical fiber (41, 42) of the optical fiber array (4) sequentially passes through the optical isolation element group (3) and the refractive element group (2), and is emitted by a corresponding single-fiber bidirectional optical fiber interface (1). Multiple optical circulators are integrated within the volume of one optical circulator, thereby reducing the volume occupied by optical circulators in an overall device, lowering the overall cost of the device, and improving the convenience of optical path integration.
G02F 1/095 - Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulatingNon-linear optics for the control of the intensity, phase, polarisation or colour based on magneto-optical elements, e.g. exhibiting Faraday effect in an optical waveguide structure
An optical signal detection system, comprising: a light source (101), configured to generate a first optical signal in a first wavelength range; a light splitting apparatus (102), configured to convert the first optical signal into a second optical signal having a different wavelength and emitted at a different angle; an optical signal detection apparatus (103), configured to detect the energy of the second optical signal having a different wavelength.
An optical path coupling method and device, and a storage medium. The optical path coupling method comprises: aligning an optical assembly with a printed circuit board on the basis of the position of a first mark of the printed circuit board and the position of a second mark of the optical assembly (S301); moving the optical assembly by using the position of the first mark of the printed circuit board as a center, and determining optical power of an optical signal emitted by the printed circuit board after the optical signal passes through the optical assembly when the optical assembly moves to different positions (S302); and determining a first offset of the optical assembly with respect to the printed circuit board under the condition that the optical power is maximum, and fixing the optical assembly on the basis of the first offset (S303).
The present application provides 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; and comparing the processed signal with a preset decision signal, and obtaining a demodulation signal according to the comparison result. In this way, by means of direct current blocking processing of a modulation signal, dynamic changes of direct current components caused by the change of the average power of a carrier signal can be avoided, and error demodulation of the modulation signal can thus be avoided; moreover, bias processing after the direct current blocking on the modulation signal can further realize alternating current signal decision without introducing a negative pressure source; in addition, real-time decision is performed on the processed signal by utilizing the preset decision signal, dynamic adaptation to the average power of the carrier signal can be achieved, thereby ensuring the correct demodulation of the modulation signal and improving the accuracy of the demodulation result.
A multicast switching optical switch, comprising M first ports (10), a control switch (20), N second ports (30), and a light splitting apparatus (40). The control switch (20) comprises N reflection switches (21). The light splitting apparatus (40) comprises a substrate (41) and M input ends, N output ends, N transmission ends, and M planar waveguide light splitting units (45) which are located on the substrate (41); the transmission ends comprise M first sub-ends (421) and one second sub-end (422); the substrate (41) has a P end and a Q end which are opposite; the M input ends and the N output ends are located on the P end of the substrate (41); the N transmission ends are located on the Q end of the substrate (41); the input ends are arranged in one-to-one correspondence to the first ports (10); the planar waveguide light splitting units (45) are arranged in one-to-one correspondence to the input ends; the second sub-end (422) is arranged in one-to-one correspondence to the output ends; the output ends are arranged in one-to-one correspondence to the second ports (30). The input ends, the output ends, the transmission ends, and the planar waveguide light splitting units are all integrated on the substrate, and therefore, the multicast switching optical switch has the characteristics of a high integration level and a small volume.
An optical fiber adapter, relating to the field of optical communications, and comprising: a housing (2) provided with a cavity (21) comprising a first cavity (221) and a second cavity (222) which are in communication with each other and are correspondingly in communication with both opposite ends of the housing (2), respectively; a retaining member (4) integral to the housing (2) and provided in the first cavity (221), wherein the retaining member (4) is enclosed to form an accommodation cavity (41); the accommodation cavity (41) is provided with a first opening (421) located on one end, a second opening (422) located on the other end, and a third opening (43) extending along the length direction of the retaining member (4); a retaining cover plate (5) used for detachably connecting to the retaining member (4) to seal the third opening (43); and a ceramic sleeve (3) provided in the accommodation cavity (41) and adjacent to the retaining cover plate (5), wherein the ceramic sleeve (3) is provided with a third cavity (33) in communication with the first opening (421) and the second opening (422), and is limited in the accommodation cavity (41). The retaining member (4) is of an integral structure, which improves the collimating performance of the optical fiber adapter.
A light-emitting assembly and an optical module. The light-emitting assembly comprises: a substrate (2); a sealing cover plate (7); a laser (1); a lens (3); an array waveguide grating chip (5) comprising a waveguide input end (51) and a front optical waveguide output end (52), wherein the waveguide input end (51), the lens (3), and the laser (1) are in optical coupling connection to each other; and a pin assembly (6) comprising an optical fiber array head (61), a first optical fiber (62), an online optical isolator (63), an adapter assembly (64), and a second optical fiber (65). The optical fiber array head (61) passes through the sealing cover plate (7) to be in optical coupling connection to the front optical waveguide output end (52). The optical fiber array head (61) is in coupling connection to the online optical isolator (63). The online optical isolator (63) is in coupling connection to the adapter assembly (64). The online optical isolator (63) is arranged outside a closed cavity (71). In this way, the light-emitting assembly and the optical module have the advantage of saving space.
Disclosed in the embodiments of the present application are a calibration method, apparatus and device, and a storage medium. The method comprises: determining an alternative modulation depth of a modulator of a transmitting end; determining whether an actual signal-to-noise ratio of an optical signal emitted by the modulator of the transmitting end at the alternative modulation depth reaches standards; and if the actual signal-to-noise ratio of the optical signal emitted by the modulator of the transmitting end at the alternative modulation depth reaches the standards, determining the alternative modulation depth to be a target modulation depth, wherein the target modulation depth is a modulation depth used by the modulator of the transmitting end when transmitting the optical signal to a receiving end.
A calibration method, apparatus and device for a coherent optical module, and a computer readable storage medium. The method comprises: obtaining a first curve relationship and a second curve relationship, wherein the first curve relationship represents the relationship between a power gain reporting voltage and a receiving end optical power within a receiving end optical power range corresponding to the coherent optical module, and the second curve relationship represents the relationship between a target setting voltage and the receiving end optical power within the receiving end optical power range corresponding to the coherent optical module; determining a first optical power on the basis of the first curve relationship and the second curve relationship, wherein the first optical power is used for dividing the receiving end optical power range into two ranges; and determining a calibration mode of the coherent optical module on the basis of the first optical power, wherein the calibration mode comprises: in the case that the receiving end optical power of the coherent optical module is in a first range, calibrating the coherent optical module by using the first curve relationship, and in the case that the receiving end optical power of the coherent optical module is in a second range, calibrating the coherent optical module by using the second curve relationship.
An adapter assembly, which relates to the field of optical communication. The adapter assembly comprises: a housing (2), which is enclosed to form a cavity (21); holding sleeves (4) integrally molded with the housing (2), accommodating cavities (41) being formed in the holding sleeves (4), wherein one end of each holding sleeve (4) is arranged in the cavity (21) and the other end protrudes from the housing (2), and the holding sleeves (4) have openings (42) which communicate with the accommodating cavities (41); clamping members (5) arranged in the openings (42) and detachably connected to the holding sleeves (4); ceramic sleeves (3) arranged in the accommodating cavities (41); and fixing members (6) arranged at two ends of the holding sleeves (4) and connected to the holding sleeves (4) so as to limit the ceramic sleeves (3). The axes of the holding sleeves (4) are the axes thereof, which avoids the problem in which a plurality of holding sleeves (4) are not coaxial with each other due to assembly errors, and ensures free floating of the ceramic sleeves (3) in the holding sleeves (4). Therefore, when optical fibers are inserted into two ends of each ceramic sleeve (3) for docking, it is ensured that the optical fibers may be coaxially docked to each other, so that the adapter assembly has good collimation performance.
