导航与控制 ›› 2020, Vol. 19 ›› Issue (4/5): 41-47.doi: 10.3969/j.issn.1674-5558.2020.h4.005

• 院士专栏 • 上一篇    下一篇

非线性光纤Sagnac干涉仪精度分析研究

王巍1,2, 桑建芝2,3, 李明飞2,3, 刘院省2,3   

  1. 1.中国航天科技集团有限公司,北京 100048;
    2.中国航天科技集团有限公司量子工程研究中心,北京 100094;
    3.北京航天控制仪器研究所,北京 100039
  • 收稿日期:2020-07-15 出版日期:2020-10-05 发布日期:2020-12-22
  • 作者简介:王巍,中国科学院院士,国际宇航科学院院士,导航、制导与控制专家,中国航天科技集团有限公司研究发展部部长,研究员,博士生导师,中国惯性技术学会副理事长、中国计量测试学会副理事长、中国仪器仪表学会副理事长、中国光学工程学会副理事长,《宇航学报》《中国惯性技术学报》编委,《红外与激光工程》副主编。获授权发明专利40余项,发表学术著作3部,获国家技术发明奖2项、国家科技进步奖2项、省部级科技奖励8项,并获何梁何利科技进步奖、中国科协求是杰出青年奖、中国政府出版奖等多项奖励,先后被授予中国载人航天工程突出贡献者奖章等多项荣誉称号。

Research on Precision Analysis of Nonlinear Optical Fiber Sagnac Interferometer

WANG Wei1,2, SANG Jian-zhi2,3, LI Ming-fei2,3, LIU Yuan-xing2,3   

  1. 1. China Aerospace Science and Technology Corporation, Beijing 100048;
    2. Quantum Engineering Research Center of CASC, Beijing 100094;
    3. Beijing Institute of Aerospace Control Devices, Beijing 100039
  • Received:2020-07-15 Online:2020-10-05 Published:2020-12-22

摘要: 非线性光纤Sagnac干涉仪具有突破标准量子极限的优点,可实现超高精度地球自转角速度的测量。通过理论建模和数值仿真,阐明了非线性光纤Sagnac干涉仪的增益系数、光纤环长度、光纤环面积和激光波长等参量对干涉仪精度的影响。在测量地速的条件下,光纤环半径取0.5m,光纤环长度为20km且非线性增益系数大于3.582时,干涉仪灵敏度能够达到10-6(°)/h(量级),为实现高灵敏度非线性光纤Sagnac干涉仪提供了支撑。

关键词: 干涉仪, 非线性Sagnac效应, 光纤环, 地速测量

Abstract: The nonlinear optical fiber Sagnac interferometer has the advantage of breaking through the standard quantum limit, and can realize the ultra-high precision measurement of the earth rotation angular velocity. Through theoretical modeling and numerical simulation, the effects of parameters such as gain coefficient, fiber coil length, fiber coil area and laser wavelength on the accuracy of nonlinear fiber Sagnac interferometer are clarified. Under the conditions of measuring ground speed, the sensitivity of the interferometer can research 10-6(°)/h(level) when the fiber coil radius is 0.5m, the fiber coil length is 20km and the nonlinear gain coefficient is greater than 3.582, which provides support for the realization of high-sensitivity nonlinear fiber Sagnac interferometer.

Key words: interferometer, nonlinear Sagnac effect, fiber coil, ground speed measurement

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