摘要
为了分析偏振耦合误差对光纤陀螺(FOG)干涉输出的影响,根据实际的光纤陀螺的光路物理模型和琼斯矩阵理论,建立了分立光学器件及光纤焊接点传输模型,并最终推导出完整的光路系统传输模型。结果表明:光纤熔接角、偏振耦合点位置和多功能集成相位调制器的消光比都会产生偏振耦合误差;在偏振耦合误差变化以及存在相位噪声的情况下,将导致干涉输出产生噪声波动。该成果对光纤陀螺光路设计和误差抑制具有一定的参考价值和指导意义。
In order to analyze the effect of polarization-coupling error on the interference output of FOG,the transmission models of discrete optical components and the splice points were developed based on the real optical circuit physical model of FOG and the theory of Jones matrix.Also,a comprehensive transmission model of optical system was derived.The results show that fiber splice points,fiber polarization-coupling and extinction ratio generate the polarization-coupling error.The polarization-coupling error variation will result in the interference output fluctuation.This study provides a useful reference for optical circuit design and FOG error control.
出处
《辽宁工程技术大学学报（自然科学版）》
CAS
北大核心
2010年第2期267-270,共4页
Journal of Liaoning Technical University (Natural Science)
基金
国家自然科学基金资助项目(60604019)
关键词
光纤陀螺
传输模型
琼斯矩阵
偏振耦合
fiber-optic gyroscope
transmission mode
Jones matrix
polarization-coupling
