Acta Optica Sinica, Volume. 42, Issue 2, 0206003(2022)

Design and Analysis of Fiber Optic Gyroscope Based on Modulator Mid-Mounted Structure

Yuefeng Qi1,2, Chenbo Gong1,2、*, bitong Cong1, Zimeng Liu1, Tingnan Hu1, Fangke Li1, and Cui Jia1
Author Affiliations
  • 1College of Information Science and Engineering, Yanshan University, Qinhuangdao, Hebei 0 66004, China
  • 2Key Laboratory for Special Fiber and Fiber Sensor of Hebei Province, Qinhuangdao, Hebei 0 66004, China
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    A fiber optic gyroscope design based on a new phase modulator mid-mounted structure is proposed. The scheme not only can overcome the shortcoming that the modulation frequency of the traditional fiber optic gyroscope is limited to the eigen frequency, but also can suppress the backscatter noise and polarization coupling noise. Theoretical analysis and experimental results show that the proposed structure can control the phase of the backscattered wave to the order of 10 -5, and the polarization coupling noise can be suppressed to 5×10 -8 (°)/Hz 1/2. In addition, this mid-mounted structure can improve the bias stability of the gyroscope, which is increased from 0.11878 (°)/h to 0.09110 (°)/h. This scheme overcomes the technical problem of the fiber optic gyroscope influenced by eigen frequency, and provides a new way to suppress noise and improve accuracy.

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    Yuefeng Qi, Chenbo Gong, bitong Cong, Zimeng Liu, Tingnan Hu, Fangke Li, Cui Jia. Design and Analysis of Fiber Optic Gyroscope Based on Modulator Mid-Mounted Structure[J]. Acta Optica Sinica, 2022, 42(2): 0206003

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    Paper Information

    Category: Fiber Optics and Optical Communications

    Received: May. 11, 2021

    Accepted: Aug. 11, 2021

    Published Online: Dec. 29, 2021

    The Author Email: Gong Chenbo (1015019470@qq.com)

    DOI:10.3788/AOS202242.0206003

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