Title:
OPTICAL GYROSCOPE DOUBLE-LAYER SIN-BASED INTEGRATED DRIVE CHIP
Document Type and Number:
WIPO Patent Application WO/2024/000936
Kind Code:
A1
Abstract:
An optical gyroscope double-layer SiN-based integrated drive chip; a first implementation structure of the chip comprises: a first optical fiber-SiN waveguide coupler (1-1), a second optical fiber-SiN waveguide coupler (1-2), a first 3-dB beam splitter (9), a polarizer (10), a second 3-dB beam splitter (11), a first interlayer vertical coupler (5-1), a second interlayer vertical coupler (5-2), a first phase shifter (6-1), a second phase shifter (6-2), a third interlayer vertical coupler (5-3), a fourth interlayer vertical coupler (5-4), a third optical fiber-SiN waveguide coupler (7-1) and a fourth optical fiber-SiN waveguide coupler (7-2). Due to the combination of the good expandability of the SiN photonic platform and the excellent electro-optical modulation performance of the electro-optic material, the upper-layer SiN waveguides (1-1, 1-2, 7-1, 7-2) can achieve low-loss optical transmission, beam splitting and polarization on the entire chip, and the lower-layer electro-optical phase shifters (6-1, 6-2) can be integrated with the entire set of SiN photonic components, making it so that the proposed chip architecture is extremely well suited to applications such as fiber-optic gyroscopes.
Inventors:
LV HAIBIN (CN)
LI HANZHOU (CN)
JIAO FENG (CN)
LI HANZHOU (CN)
JIAO FENG (CN)
Application Number:
PCT/CN2022/126598
Publication Date:
January 04, 2024
Filing Date:
October 21, 2022
Export Citation:
Assignee:
SHENZHEN OSNAV IND CO LTD (CN)
International Classes:
G02B6/12; G01C19/72
Foreign References:
| CN114815051A | 2022-07-29 | |||
| US20220011111A1 | 2022-01-13 | |||
| US20210140768A1 | 2021-05-13 | |||
| US20220136831A1 | 2022-05-05 | |||
| CN111399117A | 2020-07-10 | |||
| CN112269224A | 2021-01-26 | |||
| CN112987175A | 2021-06-18 |
Attorney, Agent or Firm:
BEIJING GAOWO LAW FIRM (CN)
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