保圆光纤陀螺的误差分析  

Error Analysis of Circular Polarization Maintaining Optical Fiber Gyroscope

作　　者：郭玉东[1,2] 季敏宁[1,2] 

机构地区：[1]上海大学光纤研究所,上海201800 [2]上海大学特种光纤与光接入网省部共建重点实验室,上海200072

出　　处：《激光与光电子学进展》2016年第1期54-60,共7页Laser & Optoelectronics Progress

基　　金：上海市教委创新基金项目(09YZ31)

摘　　要：借鉴线偏干涉型光纤陀螺系统的理论方法,分析了圆偏振光陀螺系统的光源偏振度、传感环中的耦合点、反射点以及轴对不准所带来的误差对系统的影响。理论研究表明,在线偏振系统中易于造成偏振误差的反射点和轴对不准,在圆偏振系统下不再导致系统偏振误差;而由于圆偏振光陀螺系统中耦合偏振误差随损耗系数呈指数变化,故选择高性能的单圆偏振保持光纤对于减小偏振误差至关重要。Referring to the theoretical analysis method of the interference fiber optic gyroscope （FOG） based on linear polarization, the polarization error resulted from the circular polarization degree, coupling or reflex points, and misalignment of the butt-joint in a circular polarization maintaining optical fiber gyroscope is analyzed. The result shows that the reflex points and the misalignment which easily cause polarization error in a linear polarization system do not make influence in a circular polarization FOG. As the coupling polarization error from coupling points changes exponentially with the loss coefficient, electing a high quality single circular polarization maintaining optical fiber is significant for reducing the polarization error.

关 键 词：光纤光学 陀螺 圆偏振 偏振误差 圆保偏光纤 

分 类 号：U666.12[交通运输工程—船舶及航道工程] TN911.74[交通运输工程—船舶与海洋工程]