Bias phase and light power dependence of the random walk coefficient of fiber optic gyroscope  

作　　者：米剑 张春熹 李铮 邬战军 

机构地区：[1]School of Electronic Engineering Beihang University [2]School of Instrument Science and Opto-Electronic Engineering Beihang University

出　　处：《Chinese Optics Letters》2006年第7期379-381,共3页中国光学快报（英文版）

摘　　要：Taking account of shot noise, thermal noise, dark current noise, and intensity noise that come from broad band light source, the dependence of the random walk coefficient of fiber optic gyroscope （FOG） on bias phase and light power is studied theoretically and experimentally. It is shown that with different optical and electronic parameters, the optimal bias phase is different and should be adjusted accordingly to improve the FOG precision. By choosing appropriate bias phase, the random walk coefficient of the aim FOG is reduced from 0.0026 to 0.0019 deg./h^1/2.Taking account of shot noise, thermal noise, dark current noise, and intensity noise that come from broad band light source, the dependence of the random walk coefficient of fiber optic gyroscope （FOG） on bias phase and light power is studied theoretically and experimentally. It is shown that with different optical and electronic parameters, the optimal bias phase is different and should be adjusted accordingly to improve the FOG precision. By choosing appropriate bias phase, the random walk coefficient of the aim FOG is reduced from 0.0026 to 0.0019 deg./h^1/2.

关 键 词：Fiber optics Shot noise Thermal noise 

分 类 号：V241.5[航空宇航科学与技术—飞行器设计]