Provided is an electro-optic modulator, comprising: a first light-splitting element, comprising a first input port configured to input an operating signal, a first output port configured to output a main path signal, and a second output port configured to output a first monitoring signal; a second light-splitting element, two waveguide arms, a bias voltage modulation circuit, a radio frequency modulation circuit, a third light-splitting element, and a fourth light-splitting element.
G02F 1/225 - 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 in an optical waveguide structure
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 1/21 - 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
An electro-optic modulator is provided, including: a light splitting element; a light combining element; a first waveguide arm and a second waveguide arm that are arranged in parallel and are connected between the light splitting element and the light combining element; and a first ground electrode, a first signal electrode, a second ground electrode, a second signal electrode, and a third ground electrode that are arranged in sequence, where the first waveguide arm is located between the first ground electrode and the first signal electrode, the second waveguide arm is located between the second ground electrode and the second signal electrode, and the first signal electrode and the second signal electrode are configured to receive differential signals. A technical solution of an embodiment of the present disclosure can improve working performance of the electro-optic modulator.
G02F 1/225 - 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 in an optical waveguide structure
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
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
3.
FOLDING PHASE MODULATION MODULE AND ELECTRO-OPTICAL MODULATOR
Provided in the present disclosure are a folding phase modulation module and an electro-optical modulator. The folding phase modulation module in the present disclosure comprises a traveling wave electrode and a folding waveguide, wherein the traveling wave electrode comprises a first ground electrode, a first signal electrode, a second ground electrode, a second signal electrode and a third ground electrode, which are arranged spaced apart from one another; the traveling wave electrode comprises first linear extension portions, second linear extension portions and curved connection portions, the first linear extension portions and the second linear extension portions extending in a first direction and being alternately arranged in a second direction, and two ends of each curved connection portion being respectively connected to the first linear extension portion and the second linear extension portion which are adjacent to the curved connection portion; and the folding direction of the folding waveguide is the same as the folding direction of the traveling wave electrode, and the folding waveguide comprises a first waveguide and a second waveguide, the first waveguide and the second waveguide being configured such that same are applied with opposite electric fields by the first signal electrode at the first linear extension portions and are applied with opposite electric fields by the second signal electrode at the second linear extension portions.
G02F 1/03 - 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
An electro-optic modulator and an optical emitter comprising same. The electro-optic modulator comprises a first branch waveguide (101), a second branch waveguide (102) and radio-frequency electrodes. The radio-frequency electrodes include a first ground electrode (111), a first signal electrode (112), a second ground electrode (113), a second signal electrode (114) and a third ground electrode (115), which are sequentially arranged at intervals, wherein the first signal electrode (112) and the second signal electrode (114) are configured to receive a drive signal, the first branch waveguide (101) and the second branch waveguide (102) are respectively located in spacing regions between any two adjacent electrodes among the radio-frequency electrodes, and electric fields at the positions of the first branch waveguide (101) and the second branch waveguide (102) are in opposite directions.
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
G02F 1/03 - 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
Provided are a spot-size converter structure and a photonic device. The spot-size converter structure comprises: a first end face configured to be coupled to an integrated optical waveguide, and a second end face parallel to the first end face configured to be coupled to an optical fiber and. The spot-size converter structure comprises: a substrate; an isolation layer located on one side of the substrate; a waveguide layer located on one side of the isolation layer away from the substrate; and a covering layer located on one side of the waveguide layer away from the substrate and covering the waveguide layer.
G02B 6/122 - Basic optical elements, e.g. light-guiding paths
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 6/136 - Integrated optical circuits characterised by the manufacturing method by etching
Provided in the present disclosure are a signal monitoring method and apparatus applied to an electro-optic modulator, and an electronic device, a computer-readable storage medium and a computer program product. The signal monitoring method comprises: inputting a modulation voltage signal into a modulation module of an electro-optic modulator, wherein the modulation voltage signal is obtained by means of superimposing a carrier voltage signal on a pulse voltage signal, the amplitude of the carrier voltage signal is greater than a half-wave voltage Vpi of the electro-optic modulator, and the amplitude of the pulse voltage signal is less than a peak-to-peak value Vpp of the carrier voltage signal (S301); acquiring a photoelectric conversion detection signal corresponding to an output optical signal of the electro-optic modulator (S302); and on the basis of the photoelectric conversion detection signal, monitoring whether the pulse voltage signal is present in the modulation voltage signal (S303).
G02F 1/03 - 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
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
Provided in the present disclosure are an optical modulation module and an optical modulator. The optical modulation module comprises a waveguide layer. The waveguide layer comprises: a flat plate portion; a first protruding portion and a second protruding portion, which are located on the flat plate portion and extend in a first direction, a distance between top faces of the first protruding portion and the second protruding portion and a bottom face of the flat plate portion being defined as H1; and a ridge portion, which is located on the flat plate portion and extends in the first direction and is located between the first protruding portion and the second protruding portion, wherein a first trench is formed between the ridge portion and the first protruding portion, and a second trench is formed between the ridge portion and the second protruding portion, a distance between a top face of the ridge protruding portion and the bottom face of the flat plate portion being defined as H2, where H2 > H1.
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
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
Provided are an electro-optic modulator and an electro-optic device. The electro-optic modulator includes: a substrate; an isolation layer located on the substrate; a thin film layer, used to form a first optical waveguide and a second optical waveguide, an arrangement of the first optical waveguide and the second optical waveguide causing the thin film layer to include a first edge region, a first optical waveguide, an intermediate region, a second optical waveguide, and a second edge region; and an electrode, comprising including a first ground electrode, a signal electrode and a second ground electrode which are sequentially arranged at intervals. The first ground electrode at least includes a first main electrode, the second ground electrode at least includes a second main electrode, and the signal electrode at least includes a third main electrode.
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
An electro-optic modulator and an electro-optic device are provided. The electro-optic modulator includes: a first optical waveguide, a second optical waveguide, and a traveling wave electrode, where the traveling wave electrode includes a first grounding electrode, a first signal electrode, a second signal electrode, and a second grounding electrode that are spaced apart from each other; and the first optical waveguide and the second optical waveguide are both arranged between the first signal electrode and the second signal electrode. The electro-optic modulator has a plurality of extension sections along a extension direction thereof. The plurality of extension sections include a plurality of straight sections and at least one curved section. Each curved section is provided between two adjacent straight sections.
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
10.
SPOT-SIZE CONVERSION STRUCTURE AND PHOTONIC DEVICE
A spot-size conversion structure and a photonic device. The spot-size conversion structure includes: a substrate, an isolation layer and a waveguide layer arranged in sequence. The waveguide layer includes N sub-waveguide layers arranged in sequence along a direction away from the substrate, each of the sub-waveguide layers being of a protrusion shape, and N being a natural number and N≥3. Wherein, the spot-size conversion structure has a first end face configured to be coupled to an integrated optical waveguide, and a second end face opposite to the first end face and configured to be coupled to an optical fiber.
An optical modulation chip and a tunable laser are provided. The optical modulation chip includes: an electro-optic phase modulation circuit configured to modulate a wavelength of laser light input based on an electro-optic effect and a target wavelength mode; and a passband circuit configured to receive laser light output by the electro-optic phase modulation circuit, reflect and output at least a portion of laser light of the target wavelength mode of laser light input, and dissipate laser light outside the target wavelength mode of the laser light input.
A folded electro-optic modulator is provided. The folded electro-optic modulator includes: a first main electrode, a first waveguide arm, a second main electrode, a second waveguide arm and a third main electrode arranged in sequence, and the following structures provided in each even-ordered radio-frequency modulation region of the folded electro-optic modulator: a plurality of first sub-electrodes; a plurality of second sub-electrodes; a plurality of third sub-electrodes; and a plurality of fourth sub-electrodes.
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
G02F 1/225 - 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 in an optical waveguide structure
13.
PHASE MODULATION MODULE AND ELECTRO-OPTIC MODULATOR
A phase modulation module and an electro-optic modulator are provided. The phase modulation module has an input end face and an output end face and the phase modulation module comprises a substrate, an isolation layer, a waveguide layer, and an electrode layer which are arranged in sequence. The electrode layer includes a plurality of electrodes which are arranged at intervals and configured to form a modulating electric field region. The waveguide layer comprises a plate layer, a first ridge layer, and a second ridge layer which are arranged in sequence in a direction away from the substrate.
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 1/21 - 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
14.
WAVEGUIDE LINE ELECTRODE STRUCTURE AND ELECTRO-OPTIC MODULATOR
A waveguide line electrode structure is provided. The waveguide line electrode structure includes a first ground electrode, a signal electrode and a second ground electrode that are sequentially arranged spaced apart from each other; an optical waveguide including a first branch and a second branch; a first covering layer; a second covering layer and at least one electrode extension portion.
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
H01P 3/00 - WaveguidesTransmission lines of the waveguide type
An electro-optic modulator is provided. The electro-optic modulator includes: an optical splitter; a first optical waveguide and a second optical waveguide; traveling wave electrodes including a first grounding electrode, a first signal electrode, a second signal electrode, and a second grounding electrode; extension electrodes including at least one first signal sub-electrode and two second signal sub-electrodes, where the two second signal sub-electrodes are arranged on both sides of the at least one first signal sub-electrode and the first signal electrode is electrically connected to the first signal sub-electrodes, and the second signal electrode is electrically connected to the second signal sub-electrodes.
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
G02F 1/03 - 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
16.
SPOT-SIZE CONVERTER, PHOTONIC DEVICE AND METHOD FOR FABRICATING SPOT-SIZE CONVERTER
A spot-size converter, a photonic device, and a method for fabricating a spot-size converter are provided. The spot-size converter is provided with a first end face and a second end face parallel to each other and comprises a substrate, an isolation layer, a waveguide layer and a cover layer that are arranged in sequence. The substrate is provided with a first recess that is exposed to its top surface and the second end face. The isolation layer is provided with a second recess and a third recess that are exposed to its top surface and the second end face; the second recess is provided with a plurality of first holes communicating with the first recess, the third recess is provided with a plurality of second holes communicating with the first recess.
G02B 6/122 - Basic optical elements, e.g. light-guiding paths
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 6/136 - Integrated optical circuits characterised by the manufacturing method by etching
A spot-size converter is provided. The spot-size converter includes a first end face and a second end face, and further includes a substrate, and an isolation layer, a first waveguide and a covering layer which are located on a side of the substrate. The first waveguide includes a flat-plate layer and a ridge layer. The flat-plate layer includes a first wide end extending to the first end face and a first narrow end extending to the second end face or having a distance from the second end face, and the flat-plate layer has a width decreasing in a gradient from the first wide end to the first narrow end and includes a first equal-width portion adjacent to the first narrow end. The ridge layer includes a second wide end extending to the first end face and a second narrow end having a distance from the first narrow end.
A thermo-optic phase modulation module and an optical modulator are provided. The thermo-optic phase modulation module includes: a substrate; an isolation layer located on substrate; a first waveguide located on isolation layer; and at least one heating element located on the isolation layer and not overlapping with the first waveguide in a direction perpendicular to a bottom surface of the substrate. The thermo-optic phase modulation module is provided with a plurality of side heat insulation grooves extending downwardly from a top surface and exposing the substrate, and the plurality of side heat insulation grooves are arranged around the first waveguide and the at least one heating element.
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
An electro-optic modulator is provided, which includes a waveguide layer and an electrode layer, where the electrode layer includes: a plurality of first sub-electrodes and a plurality of first connecting electrodes; a plurality of second sub-electrodes and a plurality of second connecting electrodes; a plurality of third sub-electrodes and a plurality of third connecting electrodes; and a plurality of fourth sub-electrodes and a plurality of fourth connecting electrodes, where the plurality of first sub-electrodes and the plurality of fourth sub-electrodes are grounded, the plurality of second sub-electrodes and the plurality of third sub-electrodes receive differential signals, the plurality of first sub-electrodes and the plurality of second sub-electrodes form a first electric field therebetween, and the plurality of third sub-electrodes and the plurality of fourth sub-electrodes form a second electric field therebetween; and the waveguide layer includes a first waveguide arm and a second waveguide arm.
G02F 1/225 - 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 in an optical waveguide structure
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
20.
Photonic Device, Crossed Waveguide, Waveguide Layer and Method for Manufacturing Same
An electro-optic modulator, comprising a light-splitting element, a light-combining element, two waveguide arms and a modulation electrode, wherein the two waveguide arms are connected between the light-splitting element and the light-combining element. Each waveguide arm comprises a first single-mode waveguide portion, a first coupling portion, a multi-mode waveguide portion, a second coupling portion and a second single-mode waveguide portion, wherein the width of either one of the first single-mode waveguide portion and the second single-mode waveguide portion is less than the width of the multi-mode waveguide portion; the first coupling portion is configured to enable light to be coupled into the multi-mode waveguide portion from the first single-mode waveguide portion; and the second coupling portion is configured to enable the light to be coupled into the second single-mode waveguide portion from the multi-mode waveguide portion. The modulation electrode is configured to apply modulation voltages to multi-mode waveguide portions of the two waveguide arms.
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
An electro-optic modulator and an electro-optic device. The electro-optic modulator comprises: a first optical waveguide, a second optical waveguide, and a traveling wave electrode, wherein the traveling wave electrode comprises a first ground electrode, a first signal electrode, a second signal electrode, and a second ground electrode that are spaced away from one another; and the first optical waveguide and the second optical waveguide are both arranged between the first signal electrode and the second signal electrode. The electro-optic modulator has a plurality of extension sections along the extension direction thereof. The plurality of extension sections comprise a plurality of linear sections and at least one curved section. Each curved section is provided between two adjacent linear sections. According to one or more embodiments of the present disclosure, the electro-optic modulator adopts curved and folded design, the plurality of linear sections can be stacked together, and therefore, compared with a traditional electro-optic modulator, the size in the length direction can be greatly reduced, thereby reducing the costs of manufacturing the electro-optic modulator.
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
G02F 1/03 - 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
Provided are an electro-optic modulator and an electro-optic device. The electro-optic modulator comprises: a substrate; an isolation layer located on the substrate; a thin film layer, used to form a first optical waveguide and a second optical waveguide, an arrangement of the first optical waveguide and the second optical waveguide causing the thin film layer to comprise a first edge region, a first optical waveguide, an intermediate region, a second optical waveguide, and a second edge region; and an electrode, comprising a first ground electrode, a signal electrode and a second ground electrode which are sequentially arranged at intervals. The first ground electrode at least comprises a first main electrode, the second ground electrode at least comprises a second main electrode, and the signal electrode at least comprises a third main electrode. The first optical waveguide is arranged in a first gap between the first main electrode and the third main electrode, and the second optical waveguide is arranged in a second gap between the second main electrode and the third main electrode. The first main electrode and the second main electrode are arranged on a horizontal plane having a first height, the third main electrode is arranged on a horizontal plane having a second height, and the first height is different from the second height.
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
G02F 1/03 - 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
Provided is a folded electro-optic modulator, comprising a first main electrode, a first waveguide arm, a second main electrode, a second waveguide arm, and a third main electrode arranged in sequence. The following structures are provided in any even-ordered radio-frequency modulation region of the folded electro-optic modulator: multiple first sub-electrodes, each first sub-electrode being connected to a side of the first main electrode close to the second main electrode by means a first connecting arm that is insulated from and intersects with the first waveguide arm; multiple second sub-electrodes, each second sub-electrode being connected to the side of the second main electrode close to the first main electrode by means of a second connecting arm that is insulated from and intersects with the first waveguide arm; multiple third sub-electrodes, each third sub-electrode being connected to the side of the second main electrode close to the third main electrode by means a third connecting arm that is insulated from and intersects with the second waveguide arm; and multiple fourth sub-electrodes, each fourth sub-electrode being connected to the side of the third main electrode close to the second main electrode by means of a fourth connecting arm that is insulated from and intersects with the second waveguide arm.
G02F 1/03 - 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
An electro-optic modulator, comprising an optical splitter (110); a first optical waveguide (120a) and a second optical waveguide (120b); a traveling-wave electrode (130), comprising a first grounding electrode (131), a first signal electrode (132), a second signal electrode (133), and a second grounding electrode (134); and an extension electrode (140), comprising at least one first signal sub-electrode (142a, 142b) and two second signal sub-electrodes (143a, 143b), wherein the two second signal sub-electrodes (143a, 143b) are arranged on the two sides of the at least one first signal sub-electrode (142a, 142b). The first optical waveguide (120a) is arranged between one of the two second signal sub-electrodes (143a, 143b) and the first signal sub-electrode (142a, 142b) adjacent to said second signal sub-electrode; and the second optical waveguide (120b) is arranged between the other one of the two second signal sub-electrodes (143a, 143b) and the first signal sub-electrode (142a, 142b) adjacent to said other second signal sub-electrode. The first signal electrode (132) is electrically connected to the first signal sub-electrode (142a, 142b), and the second signal electrode (133) is electrically connected to the second signal sub-electrodes (143a, 143b). Also provided is an electro-optic device comprising the electro-optic modulator.
G02F 1/225 - 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 in an optical waveguide structure
26.
OPTICAL POWER DISTRIBUTION ELEMENT AND PHOTONIC DEVICE
An optical power distribution element (100) and a photonic device (1). The optical power distribution element (100) comprises a substrate (101), an isolation layer (102) and a first waveguide layer (104) arranged in sequence. The first waveguide layer (104) comprises: a first ridge protrusion (41); two second ridge protrusions (42), which are located on two sides of the first ridge protrusion (41), and are staggered with the first ridge protrusion (41) in the longitudinal direction of the first ridge protrusion (41), wherein the width of the first ridge protrusion (41) exhibits a decreasing trend from a first wide end (41a) distant from the two second ridge protrusions (42) to a first narrow end (41b) close to the two second ridge protrusions (42), and the width of each second ridge protrusion (42) exhibits an increasing trend from a second narrow end (42b) close to the first ridge protrusion (41) to a second wide end (42a) distant from the first ridge protrusion (41); and two connecting parts (43), wherein one connecting part (43) is located between the first ridge protrusion (41) and one of the second ridge protrusions and connects the first ridge protrusion (41) and said second ridge protrusion (42), the other connecting part (43) is located between the first ridge protrusion (41) and the other second ridge protrusion (42) and connects the first ridge protrusion (41) and said other second ridge protrusion (42).
A photonic device, a crossed waveguide, a waveguide layer and a manufacturing method therefor. A flat sublayer (11) is provided under a first waveguide (12) and a second waveguide (13) intersecting the first waveguide (12), so that during the transmission of light in a waveguide layer, energy is mainly concentrated on the flat sublayer (11), and loss is mainly caused in the flat sublayer (11); the first waveguide (12) and the second waveguide (13) are both ridge waveguides; moreover, the loss of the ridge waveguides is small, and the volume of the flat sublayer (11) is larger than those of the ridge waveguides, such that the loss of the flat sublayer (11) and the loss of the ridge waveguides are reduced. Thus, the problem in the related art of fast loss of ridge waveguides is solved.
A multimode interference element and a Mach-Zehnder modulator (001). The multimode interference element comprises an input end surface (105a) and an output end surface (105b) and comprises: a first input end (511) that is located on the input end surface (105a) and configured to receive a first branch optical signal (11); a second input end (512) that is located on the input end surface (105a) and configured to receive a second branch optical signal (12); a first output end (521) that is located on the output end surface (105b) and configured to output a working signal (112), the working signal (112) being capable of reaching a maximum strength value of a coherent enhancement signal of the first branch optical signal (11) and the second branch optical signal (12) having a phase difference of 2NΠ; and a second output end (522) and a third output end (523) that are located on the output end surface (105b) and configured to respectively output monitoring signals (13), the monitoring signals (13) being capable of reaching a set distribution proportion of the maximum strength value of the coherent enhancement signal of the first branch optical signal (11) and the second branch optical signal (12) having a phase difference of (2N+1)Π, N being 0 or a natural number, and the set distribution proportion being greater than 0 and less than 1.
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
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
29.
ELECTRO-OPTICAL MODULATOR AND ELECTRO-OPTICAL DEVICE
An electro-optical modulator (100) and an electro-optical device (500). The electro-optical modulator (100) comprises: a light splitter (110), configured to divide an optical input signal into a first path of optical signal and a second path of optical signal; a light combiner (120), configured to combine the first path of optical signal and the second path of optical signal into a light combined signal; a first optical waveguide (130a) and a second optical waveguide (130b), configured to provide a light transmission path from the light splitter (110) to the light combiner (120) for the first path of optical signal and the second path of optical signal, respectively; a bias modulation region (140), arranged along the light transmission path and used for modulating the first path of optical signal and the second path of optical signal on the basis of a bias signal; and a radio frequency modulation region (150), arranged along the light transmission path and used for modulating the first path of optical signal and the second path of optical signal on the basis of a radio frequency signal, extending in a first direction (D1), and arranged side by side with the bias modulation region (140) in a second direction (D2). The first optical waveguide (130a) and the second optical waveguide (130b) each comprise, in the bias modulation region (140), a first section extending in the first direction (D1), a second section extending in the second direction (D2), and a third section extending in a direction opposite to the first direction (D1).
G02F 1/03 - 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
A spot-size converter (100) and a photonic device (1) comprising the spot-size converter (100). The spot-size converter (100) comprises a first end face (100a) and a second end face (100b) parallel to each other, and further comprises a substrate (101) and an isolation layer (102), a first waveguide (103) and a covering layer (104) which are located on one side of the substrate (101) and sequentially arranged in a direction away from the substrate (101), wherein the first waveguide (103) comprises a flat plate layer (31) and a ridge layer (32); the flat-plate layer (31) comprises a first wide end (31a) extending to the first end face (100a) and a first narrow end (31b) extending to the second end face (100b) or spaced apart from the second end face (100b), and the flat-plate layer (31) has a width gradually decreasing from the first wide end (31a) to the first narrow end (31b) and comprises a first equal-width portion (311) adjacent to the first narrow end (31b); the ridge layer (32) comprises a second wide end (32a) extending to the first end face (100a) and a second narrow end (32b) spaced apart from the first narrow end (31b), and the ridge layer (32) has a width gradually decreasing from the second wide end (32a) to the second narrow end (32b) and comprises a second equal-width portion (321) adjacent to the second narrow end (32b); and the covering layer (104) extends to the second end face (100b), and extends to cover at least the end of the second equal-width portion that is away from the second end face (100b).
A coplanar waveguide wire electrode structure and a modulator includes a metal electrode and an optical waveguide. The metal electrode includes ground electrodes and a signal electrode. Connecting arms are arranged on both sides of the signal electrode. The inner sides of the ground electrodes are provided with other connecting arms. The tail ends of the connecting arms of the signal electrode are provided with signal wire extension electrodes, and the tail ends of the connecting arms of the ground electrodes are provided with ground wire extension electrodes. A distance is provided between the signal wire extension electrodes and the ground wire extension electrodes. The optical waveguide passes through the spaces between the signal wire extension electrodes and the ground wire extension electrodes. By extending the metal electrode, the distance between the electrodes is actually shortened.
G02F 1/03 - 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
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
Provided is a distributed optical phase modulator, comprising: a substrate (10); an optical waveguide (20) arranged on the substrate (10); a drive electrode (30) that is arranged on the substrate (10) and comprises a plurality of sub drive electrodes (31) arranged at intervals; and at least one shielding electrode (40), wherein at least some shielding electrodes and the sub drive electrodes (31) are arranged at intervals. The optical waveguide (20) sequentially passes through the sub drive electrodes (31) and the shielding electrodes (40). The length of each part of the drive electrode (30) is far less than the total length of an equivalent traditional modulator, and the drive signal voltage of each part is also far less than the drive signal voltage of the equivalent traditional modulator. In each part of the drive electrode (30), the propagation of an optical signal and the propagation of an electrical signal can be approximately synchronous, even synchronous. The phenomenon of walk-off between the optical signal and the electrical signal is minimized, and the upper limit of a modulation bandwidth is improved. The shielding electrodes (40) are respectively arranged between the sub drive electrodes (31), so that crosstalk between the sub drive electrodes (31) can be shielded, and crosstalk between the sub drive electrodes (31) can be greatly reduced.
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
G02F 1/03 - 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
A distributed light intensity modulator, comprising: a substrate (60); a light splitting element (10), an optical waveguide (20) and a light combining element (30) which are sequentially connected and provided on the substrate (60); a driving electrode (40) provided on the substrate (60) and comprising a plurality of sub-driving electrodes (41) arranged at intervals, the optical waveguide (20) sequentially passing through the sub-driving electrodes (41); and at least one voltage bias electrode (50), at least some of which are provided spaced apart from the sub-driving electrodes (41). The length of each sub-driving electrode (41) is far less than the total length of such conventional modulator, and in each sub-driving electrode (41), an optical signal and an electrical signal can be synchronously propagated approximately. The distributed light intensity modulator minimizes the walk-off phenomenon between photoelectric signals. The voltage bias electrodes (50) are provided between the sub-driving electrodes (41) to serve as crosstalk prevention devices for shielding crosstalk between the sub-driving electrodes (41), so that while improving the modulation bandwidth and reducing the driving voltage, the modulator can reduce the bias-drift phenomenon, and prevent the crosstalk between the sub-driving electrodes (41) caused by improving the modulation bandwidth and reducing the driving voltage.
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
G02F 1/03 - 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
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