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

作     者：Lin Chen Peitong He Biqiang Jiang Jianlin Zhao 陈琳;何沛彤;姜碧强;赵建林

作者机构：Key Laboratory of Light Field Manipulation and Information Acquisitionand Shaanxi Key Laboratory of Optical Information TechnologySchool of Physical Science and TechnologyNorthwestern Polytechnical UniversityXi’an 710129China Zhejiang LabHangzhou 311100China 

出 版 物：《Chinese Optics Letters》 (中国光学快报（英文版）)

年 卷 期：2024年第22卷第7期

页      面：6-11页

核心收录：

学科分类：0809[工学-电子科学与技术（可授工学、理学学位）] 08[工学] 0702[理学-物理学] 

基　　金：supported by the National Natural Science Foundation of China(Nos.61975166 62322510 and 62375223) 

主　　题：fiber optic gyroscope inline wave plate optical frequency domain reflectometry polarization-mode converter. 

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 *** error contributes 8×10^(−6) rad to FOG’s bias *** a UV-fabricated in-fiberλ/4 wave plate and polarization-mode converter with fiber taper technology,the modulation error has been suppressed by 15 dB in assembled *** 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.