Abstract

A coupling effect in the single-mode fiber coil (SMFC) of a depolarized interference fiber optic gyroscope (De-IFOG) under time-varying temperature and magnetic field, which can cause a serious nonreciprocal phase error, is revealed. In this paper, the mechanism of the coupling effect is thoroughly studied and the related theory is derived in detail. Simulations and experiments are carried out to verify the validity. The experiments show a peak-to-peak value error of about 50 °/h in the SMFC when the magnitude of magnetic field is 10 Gauss and the temperature uniformly increases from 10 to 60 °C at the rate of 36 °C/h, which cannot be neglected in the applications of De-IFOGs.

© 2019 IEEE

Cross-coupling drift between magnetic field and temperature in depolarized interferometric fiber optic gyroscope

L. Chen, Y. X. Zhao, M. F. Yang, D. W. Zhang, X. W. Shu, and C. Liu
Opt. Express 27(5) 6003-6011 (2019)

Compensation of thermal strain induced polarization nonreciprocity in dual-polarization fiber optic gyroscope

Rongya Luo, Yulin Li, Sheng Deng, Dong He, Chao Peng, and Zhengbin Li
Opt. Express 25(22) 26747-26759 (2017)

Nonreciprocal phase shift caused by magnetic-thermal coupling of a polarization maintaining fiber optic gyroscope

Dengwei Zhang, Yuxiang Zhao, Wenlan Fu, Wenqing Zhou, Cheng Liu, Xiaowu Shu, and Shuangliang Che
Opt. Lett. 39(6) 1382-1385 (2014)

Performance analysis of the fiber coils combining hybrid polarization-maintaining fiber designs and symmetrical winding patterns

Meng Li, Xuyou Li, Dan Xu, and Haoyu Li
Opt. Express 31(14) 22424-22443 (2023)

A novel method for determining and improving the quality of a quadrupolar fiber gyro coil under temperature variations

Zhihong Li, Zhuo Meng, Tiegen Liu, and X. Steve Yao
Opt. Express 21(2) 2521-2530 (2013)