Software compensation for the coupling error of a single-mode fiber coil under time-varying temperature and magnetic field

被引：3
|
作者：
Liang, Cui [1 ]
Li, Jinhao [1 ]
Pan, Wenqing [1 ]
Zhang, Dengwei [1 ]
Shu, Xiaowu [1 ]
机构：
[1] Zhejiang Univ, State Key Lab Modern Opt Instrumentat, Hangzhou, Zhejiang, Peoples R China
来源：
OPTICAL ENGINEERING | 2020年 / 59卷 / 04期
基金：
中国国家自然科学基金;
关键词：
single-mode fiber coil; coupling effect; time-varying temperature; magnetic field; software compensation;
D O I：
10.1117/1.OE.59.4.044102
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
Previous studies have shown that there exists a large nonreciprocal phase error in the single-mode fiber coil of a depolarized interference fiber optic gyroscope (De-IFOG) under time-varying temperature and magnetic field, which evidently weakens its environmental adaptability. A real-time software compensation method considering the coupling effect of time-varying temperature and magnetic field is first proposed and verified experimentally. After compensation, the error of De-IFOG decreases from 50 deg /h to 6 deg /h when the magnitude of the magnetic field is 10 G and temperature uniformly increases from 10 degrees C to 60 degrees C with time-varying rate of 36 degrees C/h. The compensation method is of great significance in De-IFOG engineering applications. (C) 2020 Society of Photo-Optical Instrumentation Engineers (SPIE)
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页数：7
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