Suppression of modulation-induced polarization error in spliceless open-loop fiber optic gyroscope[Invited]

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外文摘要：The suppression of polarization cross talk in lead zirconate titanate phase modulators as a key error source has been challenging for open-loop fiber optic gyroscopes[FOGs].We developed a polarization-diversity optical frequency domain reflectometry[OFDR]to measure the distributed modulation polarization error in the modulator.The error contributes 8 x 10-6 rad to FOG's bias instability.Using a UV-fabricated in-fiber λ/4 wave plate and polarization-mode converter with fiber taper technology,the modulation error has been suppressed by 15 dB in assembled FOGs.This approach reduced error with temperature from 25°/h to 0.7°/h,meeting the requirements of control-level gyroscopes with bias errors less than 1°/h.

外文关键词：

fiber optic gyroscopeinline wave plateoptical frequency domain reflectometrypolarization-mode converter

作者：

陈琳、何沛彤、姜碧强、赵建林

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作者单位：

Key Laboratory of Light Field Manipulation and Information Acquisition,and Shaanxi Key Laboratory of Optical Information Technology,School of Physical Science and Technology,Northwestern Polytechnical University,Xi'an 710129,China

Zhejiang Lab,Hangzhou 311100,China

出版年：

2024

DOI：

10.3788/COL202422.070601

中国光学快报(英文版)

中国光学学会中国科学院上海光学精密机械研究所

中国光学快报(英文版)

CSTPCD

影响因子：1.305

ISSN：1671-7694

年,卷(期)：2024.22(7)