Abstract

In this article, a closed-loop signal detection method is proposed to improve the dynamic performance of the resonant integrated optical gyroscope. We firstly establish a closed-loop error model of the angular velocity tracking system with optical nonlinearity and parameter uncertainty based on triangular phase modulation technology. Then, we optimize the loop gains of the signal processing to improve the signal-to-noise ratio of the closed-loop error signal about angular velocity tracking. Secondly, we design a timing sequence control method to effectively eliminate the time-delay of signal processing for optimizing the dynamic performance of the angular velocity tracking system. Finally, a control algorithm is designed to suppress the influence of the optical nonlinearity and parameter uncertainty for improving the dynamic tracking performance of resonant integrated optical gyroscopes. The experimental results demonstrate that the resonant integrated optical gyroscope has a rise time less than 36 μs, a high frequency response with the bandwidth 13.1 kHz, and a low scale factor nonlinearity less than 269.2 ppm, which verifies the effectiveness of the proposed closed-loop signal detection method for the resonant integrated optical gyroscope.

Double closed-loop control of integrated optical resonance gyroscope with mean-square exponential stability

Hui Li, Liying Liu, Zhili Lin, Qiwei Wang, Xiao Wang, and Lishuang Feng
Opt. Express 26(2) 1145-1160 (2018)

Modulation index stabilization technique of integrated optic phase modulator used in resonant integrated optic gyro

Qiwei Wang, Hui Li, Pengjie Wang, Keke Deng, and Lishuang Feng
Opt. Express 27(3) 3460-3471 (2019)

All-polymer monolithic resonant integrated optical gyroscope

Xiao-Mei Xue, Jie Tang, Huan-Li Zhou, Yan-Yan Qin, Yuanjun Song, Ruo-Zhou Li, Xiao-Yang Zhang, and Tong Zhang
Opt. Express 30(23) 42728-42737 (2022)

Enhanced differential detection technique for the resonator integrated optic gyro

Qiwei Wang, Lishuang Feng, Hui Li, Xiao Wang, Yongze Jia, and Danni Liu
Opt. Lett. 43(12) 2941-2944 (2018)

Resonant integrated optical gyroscope based on Si₃N₄ waveguide ring resonator

Changkun Feng, Dengke Zhang, Yonggui Zhang, Chen Qing, Honghao Ma, Hui Li, and Lishuang Feng
Opt. Express 29(26) 43875-43884 (2021)