Optimum Length of Fiber Coil in Space-borne Interferometric Fiber Optic Gyroscope
The choice of fiber length in sensing coil is a key issue for interferometric fiber optic gyroscope (IFOG) design. Considering the influence of radiation-induced attenuation (RIA) in fiber, the performance of IFOG will not always improve with increasing fiber length. In order to select a reasonable fiber length, a mathematical model describing the evolution of IFOGs random walk coefficient (RWC) as a function of the fiber length was developed firstly. Then simulation on the behavior of RWC versus fiber length at different fibers RIA was performed. The results indicate that there is an optimum length of fiber coil in spaceborne IFOG at a certain RIA of coil fiber. The optimum length decreases with increasing RIA in fiber, and the corresponding RWC decreases with decreasing RIA. Thereby, a method to optimize the length of fiber coil in space-borne IFOG was proposed.
IFOG optimum length fiber coil random walk coefficient radiation-induced attenuation
Xueqin Wang Chunxi Zhang Jing Jin Ningfang Song
Institute of Optics and Electronics Beijing University of Aeronautics and Astronautics Beijing, China
国际会议
深圳
英文
22-24
2010-11-20（万方平台首次上网日期，不代表论文的发表时间）