光学学报, 2010, 30 (10): 2864, 网络出版: 2012-10-24   

谐振式光纤陀螺保偏光纤谐振腔90°对接误差控制研究

Study on 90° Docking Error Control in Polarization Maintaining Fiber Resonator of Resonant Fiber Optic Gyroscope
作者单位
国防科学技术大学光电科学与工程学院, 湖南 长沙 410073
摘要
保偏光纤谐振腔交叉偏振耦合引起的偏振波动是谐振式光纤陀螺的主要噪声源之一,保偏光纤偏振主轴旋转90°对接是克服偏振波动的有效方法,其对接角度误差大小对陀螺噪声抑制效果有重要影响。为此利用迈克耳孙(Michelson)白光光纤干涉仪偏振耦合测试方法,从理论上对双耦合器保偏光纤谐振腔的90°对接误差进行了分析,得到迈克耳孙光纤干涉仪输出的干涉交流项公式和干涉波形,进而计算得到双耦合器保偏光纤谐振腔的90°对接误差角度。对双耦合器的保偏光纤谐振腔90°对接角度误差控制进行了实验研究,实现了0.37°的角度对接误差。
Abstract
Polarization fluctuation in polarization maintaining fiber (PMF) resonator caused by cross-polarization coupling is one of the major noise sources in resonant fiber optic gyroscope. Polarization axis 90° butt joint is an effective way to overcome the polarization fluctuation, and the size of butt docking error has important effect on the gyroscope noise suppression effects. The 90° butt joint error control of double-coupler PMF resonator based on Mickelson white-light interfero meter is studied theoretically and obtains the interference formula of polarization mode, and then the butt joint error degree. Finally, 90° docking error control in two-coupler PMF resonator is studied in experiment, and the experimental butt joint error of 0.37° is obtained.
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林惠祖, 姚琼, 胡永明. 谐振式光纤陀螺保偏光纤谐振腔90°对接误差控制研究[J]. 光学学报, 2010, 30(10): 2864. Lin Huizu, Yao Qiong, Hu Yongming. Study on 90° Docking Error Control in Polarization Maintaining Fiber Resonator of Resonant Fiber Optic Gyroscope[J]. Acta Optica Sinica, 2010, 30(10): 2864.

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