透过式光纤陀螺偏振特性的分析

偏振波动是谐振式光纤陀螺(R-FOG)的主要噪声之一,它对信号检测精度具有重要影响。通过矩阵法得到了透过式R-FOG中由偏振波动引起的系统零漂与偏振噪声相关参数、环形谐振腔结构参数间的关系表达式。在一定的透过式R-FOG系统结构参数下,对上述解析表达式进行了数值拟合,通过估算可满足高精度透过式R-FOG系统对偏振相关参数的要求,为偏振波动噪声的理论分析和R-FOG系统的实际搭建提供了理论基础。

Analysis on polarization characteristics in transmission resonant fiber-optic gyro

Polarization-fluctuation is one of the important noises in the resonant fiber-optic gyro (R-FOG). It influences on the detecting precision of R-FOG. According to the matrix method,the relationship between the zero drift caused by the polarization-fluctuation and the structural parameters of the resonator is derived in the transmission R-FOG. Using the analysis formula,the parameters about the polarization-fluctuation is gotten to reach require of the high sensitivity in the R-FOG. It gives the theoretical base for the analysis on the polarization noise and the set-up of the transmission R-FOG.