一种用于抑制去偏干涉光纤陀螺仪中径向磁误差的新光学方法。

A New Optical Method for Suppressing Radial Magnetic Error in a Depolarized Interference Fiber Optic Gyroscope.

机构信息

State Key Laboratory of Modern Optical Instrumentation, Zhejiang University, Hangzhou, 310027, Zhejiang, China.

Beijing System Design Institute of Mechanical-Electrical Engineering, Beijing, 100854, China.

出版信息

Sci Rep. 2018 Jan 31;8(1):1972. doi: 10.1038/s41598-018-20487-x.

DOI:10.1038/s41598-018-20487-x

PMID:29386592

原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC5792582/

Abstract

Based on the theory of the radial magnetic error (RME) in depolarized interference fiber optic gyroscopes (D-IFOGs) under magnetic field, a new optical method is proposed to decrease the RME by adding a suppressing section fiber (SSF) in D-IFOGs. A related theoretical model is established, and the solutions of the parameters of the SSF are obtained with numerical calculations. Then the results of the suppressed RME are simulated. An experimental system is set up to verify the theory and simulation, and the experimental results prove that the RME can be suppressed effectively with a SSF added in the D-IFOG. The magnitude of the RME can be reduced to one-tenth of the original.

摘要

基于磁场下去偏干涉光纤陀螺（D-IFOG）中径向磁误差（RME）的理论，提出了一种在 D-IFOG 中添加抑制段光纤（SSF）来降低 RME 的新光学方法。建立了相关的理论模型，并通过数值计算得到了 SSF 参数的解。然后对抑制后的 RME 结果进行了模拟。建立了实验系统来验证理论和模拟，实验结果证明，在 D-IFOG 中添加 SSF 可以有效地抑制 RME，其幅度可以降低到原始值的十分之一。