Abstract

The resonant fiber optic gyro (RFOG) based on reciprocal modulation-demodulation technique is introduced and the influence of high modulation frequency on resonance and demodulation output is analyzed. The expression of backscattering output in resonant cavity is deduced and the experimental device is built to measure the backscattering coefficient. The demodulation model considering backscattering noise is established under reciprocal sinusoidal modulation, and the optimal modulation parameters are obtained by simulation. Finally, the RFOG system is set up. The results show that the detection sensitivity is improved by 19% with the optimal modulation parameters and the system bias stability improves from 0.067°/s to 0.023°/s.

Resonant fiber optic gyroscope using a reciprocal modulation and double demodulation technique

Lu Liu, Shuang Liu, Junyi Hu, Huilian Ma, and Zhonghe Jin
Opt. Express 30(7) 12192-12203 (2022)

Resonant fiber optic gyro based on a sinusoidal wave modulation and square wave demodulation technique

Linglan Wang, Yuchao Yan, Huilian Ma, and Zhonghe Jin
Appl. Opt. 55(12) 3274-3278 (2016)

Signal processing improvement of passive resonant fiber optic gyroscope using a reciprocal modulation-demodulation technique

Hanzhao Li, Yi Lin, Lu Liu, Huilian Ma, and ZHonghe Jin
Opt. Express 28(12) 18103-18111 (2020)

Closed-loop resonant fiber optic gyro with an improved digital serrodyne modulation

Zhonghe Jin, Xuhui Yu, and Huilian Ma
Opt. Express 21(22) 26578-26588 (2013)

Frequency tracking out-of-lock control in a resonator fiber-optic gyro

Ming Lei, Huaiyong Yu, Yuan Fang, Zhe Feng, Yanji Wu, and Lizhe Zhang
Appl. Opt. 59(4) 923-928 (2020)