CN115941050A - Optical signal transmitting device - Google Patents
Optical signal transmitting device Download PDFInfo
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- CN115941050A CN115941050A CN202111554888.XA CN202111554888A CN115941050A CN 115941050 A CN115941050 A CN 115941050A CN 202111554888 A CN202111554888 A CN 202111554888A CN 115941050 A CN115941050 A CN 115941050A
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- 230000003287 optical effect Effects 0.000 title claims abstract description 167
- 239000000463 material Substances 0.000 claims description 21
- 230000008054 signal transmission Effects 0.000 claims description 18
- 238000004891 communication Methods 0.000 claims description 11
- 230000005684 electric field Effects 0.000 claims description 9
- 239000010409 thin film Substances 0.000 claims description 8
- GQYHUHYESMUTHG-UHFFFAOYSA-N lithium niobate Chemical compound [Li+].[O-][Nb](=O)=O GQYHUHYESMUTHG-UHFFFAOYSA-N 0.000 claims description 6
- 230000005697 Pockels effect Effects 0.000 claims description 5
- WSMQKESQZFQMFW-UHFFFAOYSA-N 5-methyl-pyrazole-3-carboxylic acid Chemical compound CC1=CC(C(O)=O)=NN1 WSMQKESQZFQMFW-UHFFFAOYSA-N 0.000 claims description 4
- 229910052751 metal Inorganic materials 0.000 claims description 4
- 239000002184 metal Substances 0.000 claims description 4
- JBRZTFJDHDCESZ-UHFFFAOYSA-N AsGa Chemical compound [As]#[Ga] JBRZTFJDHDCESZ-UHFFFAOYSA-N 0.000 claims description 3
- 229910001218 Gallium arsenide Inorganic materials 0.000 claims description 3
- XBJJRSFLZVLCSE-UHFFFAOYSA-N barium(2+);diborate Chemical compound [Ba+2].[Ba+2].[Ba+2].[O-]B([O-])[O-].[O-]B([O-])[O-] XBJJRSFLZVLCSE-UHFFFAOYSA-N 0.000 claims description 3
- HZEWFHLRYVTOIW-UHFFFAOYSA-N [Ti].[Ni] Chemical compound [Ti].[Ni] HZEWFHLRYVTOIW-UHFFFAOYSA-N 0.000 claims description 2
- 229910001000 nickel titanium Inorganic materials 0.000 claims description 2
- 229920000642 polymer Polymers 0.000 claims description 2
- 230000011664 signaling Effects 0.000 claims 1
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 10
- 238000012986 modification Methods 0.000 description 5
- 230000004048 modification Effects 0.000 description 5
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 3
- 229910052710 silicon Inorganic materials 0.000 description 3
- 239000010703 silicon Substances 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 2
- 239000013590 bulk material Substances 0.000 description 2
- 230000001427 coherent effect Effects 0.000 description 2
- 239000002861 polymer material Substances 0.000 description 2
- 230000002457 bidirectional effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000013307 optical fiber Substances 0.000 description 1
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- Optical Modulation, Optical Deflection, Nonlinear Optics, Optical Demodulation, Optical Logic Elements (AREA)
Abstract
The embodiment of the invention discloses an optical signal sending device, which comprises an optical modulator, a differential driver and a phase modulator, wherein the optical modulator comprises an optical input end, a first modulation area, a connecting area, a second modulation area and an optical output end; the first modulation region comprises a first modulation arm and a second modulation arm, the second modulation region comprises a third modulation arm and a fourth modulation arm, and each modulation arm comprises an optical waveguide and electrodes on two sides of the optical waveguide. The mode of driving the two modulation regions by the differential driving signal realizes the modulation of photoelectric signals, and the mode of stacking and arranging the modulation arms enables the volume of the optical modulator to be greatly reduced, thereby being beneficial to the miniaturization of devices and equipment.
Description
Technical Field
The present invention relates to the field of optical communications, and in particular, to an optical signal transmitting apparatus.
Background
In the technical field of optical communication, a high-speed optical transmitting end is a core part for constructing a high-speed optical network and is responsible for completing modulation from an electric signal to an optical signal of the whole optical network. Therefore, the rate and power consumption of the optical transmitting end directly determine the transmission capacity and quality of the whole high-speed optical communication field.
At present, in a short-distance optical interconnection scene, a silicon optical modulator is widely applied to optical modules of 100G and below due to the characteristics of low cost, small size and the like. However, due to the limitation of the free carrier mobility rate, the theoretical bandwidth upper limit of the silicon optical modulator is about 70GHz, so that the silicon optical modulator cannot meet the device bandwidth requirement of higher optical communication. In a long-distance large-capacity optical communication system, a coherent communication technology is largely adopted, and a lithium niobate material device is a high-speed device which is most adopted in the coherent system at present. Although the lithium niobate bulk material modulator can realize high bandwidth, since the bulk material itself has a large device size, it is difficult to realize low cost and low power consumption with a low driving voltage and a small size.
Disclosure of Invention
The embodiment of the invention provides an optical signal transmitting device, which is used for realizing low-cost and low-power-consumption photoelectric signal modulation.
In a first aspect, an embodiment of the present invention provides an optical signal transmitting apparatus, including an optical modulator, a differential driver, and a phase modulator, where: the optical modulator comprises an optical input end, a first modulation area, a connecting area, a second modulation area and an optical output end; the first modulation region comprises a first modulation arm and a second modulation arm, the second modulation region comprises a third modulation arm and a fourth modulation arm, and each modulation arm comprises an optical waveguide and electrodes on two sides of the optical waveguide; the optical input end is used for dividing the input continuous light into two paths and respectively outputting the two paths of continuous light to the optical waveguide of the first modulation arm and the optical waveguide of the second modulation arm in the first modulation area; the first modulation arm and the second modulation arm of the first modulation area are used for forming an electric field between electrodes on two sides of the optical waveguide of the first modulation area respectively and modulating an optical signal in the optical waveguide; the connecting area is used for connecting the first modulation area and the second modulation area and respectively inputting optical signals in the first modulation arm and the second modulation arm to the third modulation arm and the fourth modulation arm; the third modulation arm and the fourth modulation arm of the second modulation region are used for forming an electric field between electrodes on two sides of the optical waveguide of the second modulation region respectively and modulating optical signals in the optical waveguide; the optical output end is used for combining and outputting modulated optical signals in the third modulation arm and the fourth modulation arm; electrodes including a signal electrode and a ground electrode respectively disposed at both sides of the optical waveguide for forming an electric field to modulate light in the optical waveguide, the signal electrode including a positive signal electrode and a negative signal electrode; the differential driver comprises a positive signal output end and a negative signal output end and is used for generating differential driving signals, and the differential driving signals are respectively output to the signal electrode of the first modulation area and the signal electrode of the second modulation area; a phase modulator for adjusting a phase difference between the signal in the first modulation region and the signal in the second modulation region. The modulation of photoelectric signals is realized by driving the two modulation regions by the differential driving signals, the amplitude voltage of the differential driving is effectively utilized, the modulation efficiency is improved, and the power consumption is reduced.
In one possible design, the connecting region comprises two U-shaped connecting waveguides, a waveguide for connecting the first and third modulation arms, and a waveguide for connecting the second and fourth modulation arms. The optical waveguide and the electrode in the optical modulator are arranged in a laminated manner, and the phase difference generated by the phase modulator is 2 pi. The stacked arrangement of the modulation arms enables the volume of the light modulator to be greatly reduced, thereby facilitating miniaturization of devices and equipment.
In yet another possible design, the connecting region includes two U-shaped connecting waveguides, two straight waveguides, two U-shaped connecting waveguides, a waveguide for connecting the first modulation arm and the third modulator arm, and a waveguide connecting the second modulation arm and the fourth modulation arm, which are connected in sequence. The optical waveguide and the electrode in the optical modulator are arranged in a laminated manner, and the phase difference generated by the phase modulator is pi. The stacked arrangement of the modulation arms enables the volume of the light modulator to be greatly reduced, thereby facilitating miniaturization of devices and equipment. And provides flexibility of the interface on different sides of the device.
In yet another possible design, the optical waveguide material is a material having a pockels effect, and the optical waveguide material includes a lithium niobate thin film, an organic high molecular polymer, a lithium tantalate thin film, barium borate, or a gallium arsenide material. Various materials provide manufacturing flexibility.
In yet another possible design, the first modulation arm and the second modulation arm share a positive signal electrode, or the third modulation arm and the fourth modulation arm share a negative signal electrode. Thereby reducing the volume of the apparatus.
In yet another possible design, the phase modulator is an electrical delay line, and the differential driver outputs the differential drive signal to the positive signal electrode or the negative signal electrode through at least one electrical delay line. The electric delay line is an adjustable electric delay line. The flexibility of modulation is provided by the delay line.
In yet another possible design, the phase modulator is a heater and is located in the connecting region. The heater material comprises nickel titanium, or a metal. The flexibility of the device is improved by phasing the phase by the heater.
In a second aspect, an embodiment of the present invention provides an optical module, which includes the optical signal transmitting apparatus and an optical signal receiving apparatus described above, where the optical signal receiving apparatus is configured to receive an optical signal.
In a third aspect, an embodiment of the present invention provides an optical communication device, including a laser and an optical signal transmitting apparatus, where the laser is configured to output continuous light.
According to the scheme provided by the embodiment of the invention, the modulation of the photoelectric signal is realized by driving the two modulation regions through the differential driving signal, the driving voltage is greatly reduced, the modulation efficiency is improved, and the power consumption of the equipment is reduced.
Drawings
Fig. 1 is a schematic structural diagram of an optical communication system according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of an optical signal transmitting apparatus according to an embodiment of the present invention;
fig. 3 is a schematic structural diagram of another optical signal transmitting apparatus according to an embodiment of the present invention;
fig. 4 is a schematic structural diagram of another optical signal transmitting apparatus according to an embodiment of the present invention;
fig. 5 is a schematic structural diagram of another optical signal transmitting apparatus according to an embodiment of the present invention;
fig. 6 is a schematic structural diagram of another optical signal transmitting apparatus according to an embodiment of the present invention;
fig. 7 is a schematic structural diagram of another optical signal transmitting apparatus according to an embodiment of the present invention.
Detailed Description
To make the objects, technical solutions and advantages of the present invention more apparent, embodiments of the present invention will be described in detail with reference to the accompanying drawings.
As shown in fig. 1, an optical signal transmitting apparatus 102 is provided in an embodiment of the present invention. In the optical transmission system, the transmitting end includes a light source 101 and an optical signal transmitting apparatus 102. The optical signal transmission apparatus 102 includes an optical modulator 111, a differential driver 112, and a phase modulator 113. The differential driver 112 is configured to output a differential driving signal to the optical modulator 111 according to an electrical signal to be transmitted. The optical modulator 111 is configured to modulate continuous light output from the light source 101 into signal light according to a differential driving signal, and the phase modulator 113 is configured to adjust a phase difference between the signals. Thus, the electrical signal to be transmitted is modulated into an optical signal, and the modulated optical signal is transmitted to the receiving end through the optical fiber, and is received and processed by the optical signal receiving device 103.
The light source 101 and the optical signal transmission device 102 may be located in the same physical device, such as an optical communication device. The laser outputs continuous light, and the optical signal transmission device modulates the continuous light into signal light and outputs the signal light to the receiving side.
In addition, in the optical communication equipment, the optical module of the interface comprises the optical signal transmitting device and the optical signal receiving device, and realizes the bidirectional transmitting and receiving function.
Fig. 2 is a schematic structural diagram of an optical signal transmitting apparatus according to an embodiment of the present invention. The optical signal transmission apparatus includes an optical modulator 201, a differential driver 202, and a phase modulator 203, wherein the optical modulator 201 includes: a light input 211, a first modulation region comprising a first modulation arm 212 and a second modulation arm 213, a connection region 214, a second modulation region comprising a third modulation arm 215 and a fourth modulation arm 216, a light output 217; each modulation arm comprises an optical waveguide and electrodes on two sides of the optical waveguide;
an optical input end 211, configured to divide input continuous light into two paths, and output the two paths of continuous light to an optical waveguide of a first modulation arm and an optical waveguide of a second modulation arm in the first modulation region, respectively;
a first modulation arm 212 and a second modulation arm 213 of the first modulation region, which are used for forming an electric field between electrodes on two sides of an optical waveguide of the first modulation region respectively and modulating an optical signal in the optical waveguide;
a connection area 214 for connecting the first modulation area and the second modulation area, and inputting the optical signals in the first modulation arm and the second modulation arm to the third modulation arm and the fourth modulation arm, respectively; the connecting region in fig. 2 is two U-shaped waveguides connecting the two modulation arms of the first modulation region and the second modulation region, respectively.
A third modulation arm 215 and a fourth modulation arm 216 of the second modulation region, which are used for forming an electric field between electrodes on two sides of the optical waveguide of the second modulation region respectively and modulating the optical signal in the optical waveguide;
an optical output end 217, configured to combine and output the modulated optical signals in the third modulation arm and the fourth modulation arm;
the electrodes on two sides of the optical waveguide in each modulation arm comprise a signal electrode P and a grounding electrode G which are respectively arranged on two sides of the optical waveguide and are used for forming an electric field to modulate continuous light in the optical waveguide, and the signal electrode comprises a positive signal electrode P + and a negative signal electrode P-;
a differential driver 202 for generating a differential driving signal including a positive signal output terminal "RF +" and a negative signal output terminal "RF-", the differential driving signal being respectively output to the positive signal electrode of the first modulation region and the negative signal electrode of the second modulation region;
a phase modulator 203 for adjusting a phase difference between the optical signal in the first modulation region and the optical signal in the second modulation region. The phase modulator in fig. 2 is an electrical delay line, and two electrical delay lines connect the differential drive signal output by the differential drive signal to the positive signal electrode and the negative signal electrode of the two modulation regions. The phase difference of the two delay lines is 2 pi, so that the RF + and RF-signals still keep the original pi phase. Furthermore, at least one of the two delay lines is adjustable, and the adjusting range of the adjustable delay line can be within the range of 0-2 pi, so that the phase difference of the two paths of signals can be adjusted flexibly.
In fig. 2, the light input end is located on the same side of the device as the light output end. The optical waveguides and electrodes of the 4 modulation arms are arranged in a stacked manner. The optical waveguide material is a material having a Pockels Effect (Pockels Effect), and includes a lithium niobate thin film material, an organic high polymer material, a lithium tantalate thin film material, barium borate, gallium arsenide, and other materials having the Pockels Effect.
In the embodiment shown in fig. 2, the modulation of the photoelectric signal is realized by driving the two modulation regions with the differential driving signal, and the volume of the optical modulator can be greatly reduced by the stacked arrangement of the modulation arms, so that the miniaturization of the device and the equipment is facilitated.
In some usage scenarios, the input light and output light of the light modulator need to be distributed on both sides of the device. In the embodiment shown in fig. 3, the input light and the output light are on the left and right sides of the device, respectively. The optical signal transmission apparatus includes an optical modulator 301 and a differential driver 302, and a phase modulator 303. Wherein the optical modulator 301 includes: a light input 311, a first modulation region comprising a first modulation arm 312 and a second modulation arm 313, a connection region 314, a second modulation region comprising a third modulation arm 315 and a fourth modulation arm 316, a light output 317.
In fig. 3, the connecting region 314 includes two U-bends of the waveguide and a middle pair of straight waveguides for connecting the two modulation regions. The phase modulator 303 is two electrical delay lines connected to the differential driver output with a phase difference of pi. The functions of other parts are the same as those of the corresponding parts in fig. 2, and are not described again.
In fig. 3, the light input end is located on a different side of the device than the light output end. The optical waveguides and electrodes of the 4 modulation arms, and part of the waveguides of the connection region 314 are arranged in a stacked manner. Similarly, the optical waveguide material may be a linear photoelectric effect material, including a lithium niobate thin film material, an organic high polymer material, or a lithium tantalate thin film material. The realization mode improves the flexibility of the device, and greatly reduces the volume of the optical modulator, thereby being beneficial to the miniaturization of devices and equipment.
Fig. 6 is a schematic structural diagram of another optical signal transmitting apparatus according to an embodiment of the present invention, that is, a delay is adjustable in a differential driver. The differential driver 602 is used for generating differential driving signals, and has a function of adjusting a phase difference between a signal in the first modulation region and a signal in the second modulation region of the phase modulator, and two signal input ports of the modulator may be connected by a cable or a metal electrode. The functions of other parts are the same as those of the corresponding parts in fig. 2, and are not described again.
In the embodiment shown in fig. 6, the phase difference between the two signals at the positive signal output terminal "RF +" and the negative signal output terminal "RF-" is adjusted by the phase modulation function of the differential driver 602, and the original pi phase is still maintained, so that the electric drive signal is completely loaded onto the modulator, and the drive amplitude is maximally used, thereby increasing the signal amplitude.
Fig. 7 is a schematic structural diagram of another optical signal transmitting apparatus according to an embodiment of the present invention, that is, a delay is adjustable in a differential driver. The differential driver 702 is used for generating differential driving signals, and has a function of adjusting a phase difference between a signal in the first modulation region and a signal in the second modulation region of the phase modulator, and two signal input ports of the modulator may be connected by a cable or a metal electrode. The functions of other parts are the same as those of the corresponding parts in fig. 3, and are not described again.
In the embodiment shown in fig. 7, the phase difference between the two signals at the positive signal output terminal "RF +" and the negative signal output terminal "RF-" is adjusted to 2 pi phase by the phase modulation function of the differential driver 702, so that the electrical driving signal is completely loaded on the modulator, and the driving amplitude is maximally used, thereby increasing the signal amplitude.
While the invention has been described in connection with various embodiments, other variations to the disclosed embodiments can be understood and effected by those skilled in the art in practicing the claimed invention, from a review of the drawings, the disclosure, and the appended claims. In the claims, the word "comprising" does not exclude other elements or steps, and the word "a" or "an" does not exclude a plurality.
While the invention has been described in conjunction with specific features and embodiments thereof, it will be apparent that various modifications and combinations thereof are possible. Accordingly, the specification and figures are merely exemplary of the invention as defined in the appended claims and are intended to cover any and all modifications, variations, combinations, or equivalents within the scope of the invention. It will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.
Claims (14)
1. An optical signal transmission apparatus comprising an optical modulator, a differential driver, and a phase modulator, wherein:
the optical modulator comprises an optical input end, a first modulation area, a connecting area, a second modulation area and an optical output end; the first modulation region comprises a first modulation arm and a second modulation arm, the second modulation region comprises a third modulation arm and a fourth modulation arm, and each modulation arm comprises an optical waveguide and electrodes on two sides of the optical waveguide;
the optical input end is used for dividing the input continuous light into two paths and respectively outputting the two paths of continuous light to the optical waveguide of the first modulation arm and the optical waveguide of the second modulation arm in the first modulation area;
the first modulation arm and the second modulation arm of the first modulation area are used for forming an electric field between electrodes on two sides of the optical waveguide of the first modulation area respectively and modulating an optical signal in the optical waveguide;
the connecting area is used for connecting the first modulation area and the second modulation area and respectively inputting optical signals in the first modulation arm and the second modulation arm to the third modulation arm and the fourth modulation arm;
the third modulation arm and the fourth modulation arm of the second modulation region are used for forming an electric field between electrodes on two sides of the optical waveguide of the second modulation region respectively and modulating an optical signal in the optical waveguide;
the optical output end is used for combining and outputting modulated optical signals in the third modulation arm and the fourth modulation arm;
the electrodes comprise signal electrodes and grounding electrodes, the signal electrodes and the grounding electrodes are respectively arranged on two sides of the optical waveguide and are used for forming an electric field to modulate light in the optical waveguide, and the signal electrodes comprise positive signal electrodes and negative signal electrodes;
the differential driver comprises a positive signal output end and a negative signal output end and is used for generating differential driving signals, and the differential driving signals are respectively output to the signal electrode of the first modulation area and the signal electrode of the second modulation area;
the phase modulator is configured to adjust a phase difference between the signal in the first modulation region and the signal in the second modulation region.
2. The optical signal transmission device according to claim 1, wherein the connection region includes two U-shaped connection waveguides, a waveguide for connecting the first modulation arm and the third modulation arm, and a waveguide for connecting the second modulation arm and the fourth modulation arm.
3. The optical signal transmission device according to claim 2, wherein the optical waveguide and the electrode in the optical modulator are arranged in a stacked manner, and the phase difference generated by the phase modulator is 2 pi.
4. The optical signal transmission device according to claim 1, wherein the connection section includes two U-shaped connection waveguides, two straight waveguides, two U-shaped connection waveguides connected in sequence, the connection section being for connecting the waveguides of the first modulation arm and the third modulator arm, and the waveguides of the second modulation arm and the fourth modulation arm.
5. The optical signal transmission device according to claim 4, wherein the optical waveguide and the electrode in the optical modulator are arranged in a stacked manner, and the phase difference generated by the phase modulator is pi.
6. The optical signal transmission device according to any one of claims 1 to 5, wherein the optical waveguide material is a material having a Pockels effect.
7. The optical signal transmission device according to any one of claims 1 to 6, wherein the optical waveguide material comprises a lithium niobate thin film, an organic high molecular polymer, a lithium tantalate thin film, barium borate, or a gallium arsenide material.
8. The optical signal transmission device according to any of claims 1-7, wherein the first modulation arm and the second modulation arm share a positive signal electrode, or the third modulation arm and the fourth modulation arm share a negative signal electrode.
9. The optical signal transmission apparatus according to any one of claims 1 to 8, wherein the phase modulator is an electrical delay line, and the differential driver outputs a differential drive signal to the positive signal electrode or the negative signal electrode through at least one electrical delay line.
10. The optical signal transmission device of claim 9, wherein the electrical delay line is an adjustable electrical delay line.
11. The optical signal transmission device according to any one of claims 1 to 8, wherein the phase modulator is a heater and is located at the connection area.
12. The optical signaling device of claim 11 wherein the heater material comprises nickel titanium or a metal.
13. An optical module comprising the optical signal transmitting apparatus according to any one of claims 1 to 12 and an optical signal receiving apparatus for receiving an optical signal.
14. An optical communication device comprising a laser for outputting said continuous light, the optical signal transmission device of any one of claims 1-12.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP22871891.2A EP4391416A1 (en) | 2021-09-22 | 2022-09-16 | Optical signal sending apparatus |
| PCT/CN2022/119311 WO2023045845A1 (en) | 2021-09-22 | 2022-09-16 | Optical signal sending apparatus |
| US18/611,687 US20240235689A1 (en) | 2021-09-22 | 2024-03-20 | Optical signal sending apparatus |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2021111076540 | 2021-09-22 | ||
| CN202111107654 | 2021-09-22 |
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| CN115941050A true CN115941050A (en) | 2023-04-07 |
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| CN202111554888.XA Pending CN115941050A (en) | 2021-09-22 | 2021-12-17 | Optical signal transmitting device |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110441928A (en) * | 2019-08-05 | 2019-11-12 | 华南师范大学 | A kind of folding electric optical modulator and preparation method thereof |
| CN110609399A (en) * | 2019-08-05 | 2019-12-24 | 华南师范大学 | Folding silicon-lithium niobate hybrid integrated electro-optical modulator and preparation method thereof |
| US20210072616A1 (en) * | 2019-09-10 | 2021-03-11 | HyperLight Corporation | Integrated electro-optic frequency comb generator |
| CN113359367A (en) * | 2020-03-05 | 2021-09-07 | 富士通光器件株式会社 | Optical device and optical transceiver including optical modulator |
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2021
- 2021-12-17 CN CN202111554888.XA patent/CN115941050A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110441928A (en) * | 2019-08-05 | 2019-11-12 | 华南师范大学 | A kind of folding electric optical modulator and preparation method thereof |
| CN110609399A (en) * | 2019-08-05 | 2019-12-24 | 华南师范大学 | Folding silicon-lithium niobate hybrid integrated electro-optical modulator and preparation method thereof |
| US20210072616A1 (en) * | 2019-09-10 | 2021-03-11 | HyperLight Corporation | Integrated electro-optic frequency comb generator |
| CN113359367A (en) * | 2020-03-05 | 2021-09-07 | 富士通光器件株式会社 | Optical device and optical transceiver including optical modulator |
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