CN207396784U - Optical fibre gyro Y waveguide integrated modulator chip - Google Patents
Optical fibre gyro Y waveguide integrated modulator chip Download PDFInfo
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- CN207396784U CN207396784U CN201721589828.0U CN201721589828U CN207396784U CN 207396784 U CN207396784 U CN 207396784U CN 201721589828 U CN201721589828 U CN 201721589828U CN 207396784 U CN207396784 U CN 207396784U
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Abstract
The utility model is related to photoelectricity gyroscope field, more particularly to optical fibre gyro Y waveguide integrated modulator chip.Compared with prior art, the utility model optical fibre gyro Y waveguide integrated modulator chip, it is main to include integrating the lithium niobate base bottom of optical coupling and Y waveguide modulation, the lithium niobate base bottom surface has the first cone slot, second cone slot, third hand tap slot, 4th cone slot, 5th cone slot, the first cone slot, second cone slot is connected to third hand tap slot, the third hand tap slot connects the 4th cone slot respectively, 5th cone slot, the 4th cone slot, 5th cone slot both sides are respectively equipped with electrode slice, the lithium niobate base bottom surface is equipped with one layer of SiO2 film, it is completed using Planar Lightwave Circuit Technology, the direct-coupling between each part, reliability is improved while reducing volume, improve level of integrated system.
Description
Technical field
The utility model is related to fibre optic gyroscope field, more particularly to optical fibre gyro Y waveguide integrated modulator chip.
Background technology
In traditional optical fibre gyro system, light emitting diode, photo-coupler, photodetector, Y waveguide modulator and optical fiber
Ring etc. is the discrete setting of unit, is encapsulated respectively, carries out welding using optical fiber splicer between each device, causes welding
Point is more, and process is more and complicated, while causes coupling efficiency low, easily breaks down, overall volume is big, and integrated level is not high, and environment is fitted
Answering property and reliability are poor.Photo-coupler is also to be completed using the mode of fused biconical taper, and very fragile, reliability is relatively low, skill
Art platform also determines that its volume is larger.
Utility model content
Shortcoming in for the above-mentioned prior art, the utility model are intended to provide optical fibre gyro Y waveguide and integrate modulation
Optical coupling function and Y waveguide modulation function are integrated on same lithium niobate base bottom by device chip, complete using Planar Lightwave Circuit Technology
Into, form Zhui Cao areas with the mode of etching, the direct-coupling between each part, reduce volume while improve reliability, improve
Level of integrated system.
To achieve the above object, the technical solution of the utility model：Optical fibre gyro Y waveguide integrated modulator chip, including
For integrating the lithium niobate base bottom of optical coupling and Y waveguide modulation, the lithium niobate base bottom surface has the first cone slot, the second cone
Slot, third hand tap slot, the 4th cone slot, the 5th cone slot, the first cone slot, the second cone slot are connected to third hand tap slot, the third hand tap
Slot connects the 4th cone slot, the 5th cone slot respectively, and the 4th cone slot, the 5th cone slot both sides are respectively equipped with electrode slice, the niobic acid
Lithium substrate surface is equipped with one layer of SiO2 film.
The beneficial effects of the utility model：Compared with prior art, the utility model optical fibre gyro Y waveguide integrated modulator
Chip, by the way that photo-coupler and Y waveguide integrated modulator are integrated on a chip, Coupling point is reduced, external optical interface
Simply, system bulk is small, and integrated level improves, and reliability is strengthened, and manufacture craft control is easy, safeguards simple.
Description of the drawings
Fig. 1 is the structure diagram of the utility model；
Fig. 2 is that the utility model uses schematic diagram.
1- lithium niobate bases bottom in attached drawing；301- first bores slot；302- second bores slot；305- third hand tap slots；306- the 4th is bored
Slot；307- the 5th bores slot.
Specific embodiment
The utility model is further described with reference to specific embodiment and attached drawing.
As shown in the figure, the utility model optical fibre gyro Y waveguide integrated modulator chip, main to include integrating optical coupling
With the lithium niobate base bottom 1 of Y waveguide modulation, there is the first cone slot 301, second to bore slot the 302, the 3rd on 1 surface of lithium niobate base bottom
It bores slot the 305, the 4th and bores the cone slot 307 of slot the 306, the 5th, the first cone slot 301, second bores slot 302 and is connected to third hand tap slot 305,
The third hand tap slot 305 connects the 4th cone slot the 306, the 5th and bores slot 307 respectively, and the 4th cone slot the 306, the 5th bores 307 liang of slot
Side is respectively equipped with electrode slice, and 1 surface of lithium niobate base bottom is equipped with one layer of SiO2 film, between the SiO2 films and the cone slot
Certain gap is left, optical signal is enable preferably to transmit.
Specifically, the 4th cone slot the 306, the 5th bores and has been equipped with deflection device, Calibrator around slot 307, realize to light
Being polarized of signal, analyzing function.
Specifically, the first cone 301 external super-radiance light emitting diode of slot, the second cone slot, 302 external photoelectricity is visited
Device is surveyed, the 4th cone slot the 306, the 5th is bored 307 external fiber optic loop of slot, connected by the way of fiber coupling.
Specifically, the light that sends of superradiation light-emitting diode by the first cone slot 301 into beam splitting after third hand tap slot 305,
Two-way is bisected into, two-way light is looped back to third hand tap slot 305 by optical fiber and closes beam, using the second cone slot 302, wherein there is light all the way
It separates into photodetector.Wherein, the first cone slot 301, second bores slot 302, third hand tap slot 305 realizes photo-coupler
Combiner, beam splitting function, the third hand tap slot the 305, the 4th bore slot the 306, the 5th and bore slot 307 plus electrode, deflection device, analyzing
Device realizes Y waveguide modulation function.
Specifically, the fiber waveguide generated using proton exchange process on lithium niobate base bottom 1, electrode is by plating mold technique collection
Into in waveguide both sides, outputting and inputting for light passes through fiber coupling.To electrode plus after electrical modulation ripple, pass through the electric light of lithium niobate
Effect realizes the modulation to transmitting phase of light wave in waveguide.
Specifically, the optical coupling portion also can use optical circulator to substitute, the utility model effect can be equally realized.
The technical solution provided above the utility model embodiment is described in detail, used herein specifically
A example is set forth the principle and embodiment of the utility model embodiment, and the explanation of above example is only applicable to help
Assistant solves the principle of the utility model embodiment；Meanwhile for those of ordinary skill in the art, implement according to the utility model
Example, the there will be changes in specific embodiment and application range, in conclusion this specification content should not be construed as
Limitation to the utility model.
Claims (3)
1. optical fibre gyro Y waveguide integrated modulator chip, which is characterized in that including being used to integrating optical coupling and Y waveguide modulation
Lithium niobate base bottom (1), lithium niobate base bottom (1) surface have the first cone slot (301), the second cone slot (302), third hand tap slot
(305), the 4th cone slot (306), the 5th cone slot (307), the first cone slot (301), the second cone slot (302) are connected to third hand tap
Slot (305), the third hand tap slot (305) connect the 4th cone slot (306), the 5th cone slot (307), the 4th cone slot respectively
(306), the 5th cone slot (307) both sides are respectively equipped with electrode slice, and lithium niobate base bottom (1) surface is equipped with one layer of SiO2 film.
2. optical fibre gyro Y waveguide integrated modulator chip as described in claim 1, which is characterized in that the 4th cone slot
(306), deflection device, Calibrator have been equipped with around the 5th cone slot (307).
3. optical fibre gyro Y waveguide integrated modulator chip as described in claim 1, which is characterized in that the first cone slot
(301) external super-radiance light emitting diode, described second cone slot (302) external photodetector, the 4th cone slot (306),
5th cone slot (307) external fiber optic loop.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721589828.0U CN207396784U (en) | 2017-11-23 | 2017-11-23 | Optical fibre gyro Y waveguide integrated modulator chip |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721589828.0U CN207396784U (en) | 2017-11-23 | 2017-11-23 | Optical fibre gyro Y waveguide integrated modulator chip |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207396784U true CN207396784U (en) | 2018-05-22 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201721589828.0U Active CN207396784U (en) | 2017-11-23 | 2017-11-23 | Optical fibre gyro Y waveguide integrated modulator chip |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107976740A (en) * | 2017-11-23 | 2018-05-01 | 重庆鹰谷光电股份有限公司 | Optical fibre gyro Y waveguide integrated modulator chip and integrated approach |
| CN112965271A (en) * | 2021-02-05 | 2021-06-15 | 中国电子科技集团公司第四十四研究所 | Lithium niobate thin film double Y branch optical waveguide phase modulator |
-
2017
- 2017-11-23 CN CN201721589828.0U patent/CN207396784U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107976740A (en) * | 2017-11-23 | 2018-05-01 | 重庆鹰谷光电股份有限公司 | Optical fibre gyro Y waveguide integrated modulator chip and integrated approach |
| CN112965271A (en) * | 2021-02-05 | 2021-06-15 | 中国电子科技集团公司第四十四研究所 | Lithium niobate thin film double Y branch optical waveguide phase modulator |
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