Navigation-grade resonant fiber-optic gyroscope using ultra-simple white-light multibeam interferometry  

作　　者：Shuangxiang Zhao Qingwen Liu Yuanyuan Liu Huilian Ma Zuyuan He 

机构地区：[1]State Key Laboratory of Advanced Communication Systems and Networks,Shanghai Jiao Tong University,Shanghai 200240,China [2]School of Aeronautics and Astronautics,Zhejiang University,Hangzhou 310027,China

出　　处：《Photonics Research》2022年第2期542-549,共8页光子学研究（英文版）

基　　金：National Key Research and Development Program of China (2018YFC1503703);National Natural Science Foundation of China (61620106015, 61875121,61975116)。

摘　　要：The miniaturization of the gyroscope is critical for spacecrafts,drones,wellbore surveys,etc.The resonant fiberoptic gyroscope(RFOG)is a competitive candidate due to its potential in both miniaturization and high resolution,while its actual performance is well below expectation because of laser-induced noise and complexity.Here we report the first navigation grade RFOG with a bias instability of 0.009°/h and an angle random walk of 0.0093°/√h.The results are realized using a fiber resonator with finesse of 63 containing 100-m long fiber.Compared with the traditional RFOGs using narrow-linewidth lasers,the key feature of the proposed RFOG is that it is driven with a broadband light source.A white-light multibeam interference method is proposed to detect the Sagnac effect,representing the simplest scheme of RFOG to date.The complexity caused by multiple feedback loops and coherent noise suppression in traditional RFOG scheme is avoided.The minimal scheme and simple modulation algorithm will also promote the on-chip waveguide gyroscope.

关 键 词：fiber waveguide RESONANT 

分 类 号：TN96[电子电信—信号与信息处理]