非理想集成光学器件对光纤陀螺的影响  

Influence of Nonideal Integrated Optic Circuit on FOG Performance

作　　者：周超超[1] 霍光[1] 卫炀[1] 孙国明[1] 谢良平[1] 李县洛[1] 严吉中[1] 

机构地区：[1]中航工业西安飞行自动控制研究所,西安710065

出　　处：《激光杂志》2016年第1期44-48,共5页Laser Journal

摘　　要：光纤陀螺光路的偏振误差抑制是光纤陀螺研制中的关键技术之一。根据实际的光纤陀螺的光路物理模型和琼斯矩阵理论,对光纤陀螺中光学器件和熔接点的光学参数进行了描述,建立了分立光学器件及光纤焊接点传输模型,该模型接近工程实际,并最终推导出完整的光路系统传输模型。对光路中关键器件Y波导的非理想因素进行了分析,分析了Y波导非理想因素对陀螺系统噪声的影响。根据不同陀螺精度的需求,该结果可以指导器件的筛选。另外该方法可以有效地分析光路系统缺陷对零偏和标度因数的影响,在工程上可作为评价干涉式光纤陀螺光路系统性能的一个途径。The polarization error controlling of optical circuit is one of the key technologies about producing the fiber optical gyroscope （FOG）. Based on the real optical circuit physical model of FOG and the theory of Jones matrix, the paper depicted the optics instruments and the optics parameters of splice points, and established discrete optical ele- ments and splice points transmission model,which was close to the practice. Then a comprehensive transmission model of optical circuit was derived. The effects of no ideal Y-type integrated optic modulation are analyzed on measurement accuracy of FOG. Based on the accuracy of FOG, the analysis can guide the instrument filtration. In addition, the model effectively analyzed the defects of optical system vices on bias and scale factor. And the model can be used to evaluate the property of interferometfic fiber optic gyroscope.

关 键 词：光纤陀螺 琼斯矩阵 偏振误差 散粒噪声 

分 类 号：TN253[电子电信—物理电子学]