Wang Xinyue, Wang Ziyu
State Key Laboratory on Advanced Optical Communication Systems and Networks, Department of Electronics, Peking University, Beijing 100871, China.
Appl Opt. 2011 May 1;50(13):1856-60. doi: 10.1364/AO.50.001856.
We propose a revised minimum reciprocity configuration (MRC) of an interferometric all-fiber-optic gyroscope (all-fiber I-FOG), based on our design of a fused-taper polarization-maintaining fiber coupler. This MRC reduces the insertion loss and production cost of the optical path, yet maintains the principle of reciprocity. Experimental results show that this I-FOG with five optical components exhibits better performance than a conventional I-FOG with six optical components. Using the revised MRC, the angle random walk and the bias instability of an I-FOG are improved from 0.025 deg/√hr to 0.011 deg/√hr, and 0.48 deg/hr to 0.21 deg/hr, respectively.
基于我们对熔锥型保偏光纤耦合器的设计，我们提出了一种干涉型全光纤陀螺仪（全光纤I-FOG）的改进型最小互易配置（MRC）。这种MRC降低了光路的插入损耗和生产成本，同时保持了互易原理。实验结果表明，这种具有五个光学元件的I-FOG比具有六个光学元件的传统I-FOG性能更好。使用改进后的MRC，I-FOG的角度随机游走和偏置不稳定性分别从0.025°/√hr提高到0.011°/√hr，从0.48°/hr提高到0.21°/hr。
