光学学报, 2018, 38 (1): 0106006, 网络出版: 2018-08-31
保偏光纤陀螺横向磁场误差的温度依赖性 下载: 1140次
Temperature Dependence of Transverse Magnetic Error in a Polarization Maintaining Fiber Optic Gyroscope
光纤光学 光纤陀螺 琼斯矩阵 磁场误差 法拉第效应 温度依赖性 fiber optics fiber optic gyroscope Jones matrix magnetic field error Faraday effect temperature dependence
摘要
针对无骨架光纤环的保偏光纤陀螺中横向磁场误差的温度依赖性研究发现,保偏光纤线双折射以及Verdet常数固有的温度依赖性可以导致横向磁场误差随着温度变化而变化。利用琼斯矩阵方法推导了保偏光纤陀螺横向磁场误差与温度的关系,并进行了实验验证。实验结果表明,对于长度为1 km,半径为6 cm,光纤线双折射为2027 rad·m
-1,最大扭转率为0.382 rad·m
-1的无骨架光纤环,在 1 mT横向磁场以及-40~60 ℃温度场作用下,光纤陀螺的横向磁场误差由26.51 (°)·h
-1 增加到30.43 (°)·h
-1。
Abstract
An investigation of the temperature dependence of transverse magnetic error in the polarization maintaining fiber optic gyroscope (PM-FOG) with non-skeleton coil is presented. It is found that the transverse magnetic error changes with the temperature, which can result from the temperature dependence of linear birefringence and Verdet constant of polarization maintaining fiber (PMF). Based on Jones matrix method, the relationship between the transverse magnetic error and temperature in PM-FOG is deduced, and the experimental verification is carried out. The experimental results show that for the non-skeleton coil with length of 1 km, radius of 6 cm, linear birefringence of 2027 rad·m
-1, and maximum twist rate of 0.382 rad·m
-1, the transverse magnetic error changes from 26.51 (°)·h
-1 to 30.43 (°)·h
-1, under 1 mT transverse magnetic field and the temperature range of -40 ℃ to 60 ℃.
李绪友, 刘攀, 光星星, 郭衍达, 孟庆文, 李光春. 保偏光纤陀螺横向磁场误差的温度依赖性[J]. 光学学报, 2018, 38(1): 0106006. Xuyou Li, Pan Liu, Xingxing Guang, Yanda Guo, Qingwen Meng, Guangchun Li. Temperature Dependence of Transverse Magnetic Error in a Polarization Maintaining Fiber Optic Gyroscope[J]. Acta Optica Sinica, 2018, 38(1): 0106006.