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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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    AbstractGet PDF(in Chinese)
    Figures&Tables (10)
    Equations (0)
    References (19)
    Cited By (1)
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    Figures & Tables(10)
    Schematic diagram of fiber optic gyroscope with mid-mounted structure

    Fig. 1. Schematic diagram of fiber optic gyroscope with mid-mounted structure

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    Structure diagram of new phase modulator

    Fig. 2. Structure diagram of new phase modulator

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    Schematic diagram of backscattered waves

    Fig. 3. Schematic diagram of backscattered waves

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    Relationship between phase introduced by backscattered wave and distance Δz

    Fig. 4. Relationship between phase introduced by backscattered wave and distance Δz

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    Analysis diagram of wave polarization state of fiber optic gyroscope

    Fig. 5. Analysis diagram of wave polarization state of fiber optic gyroscope

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    Relationship between polarization coupling noise and source coherence time for different coil lengths

    Fig. 6. Relationship between polarization coupling noise and source coherence time for different coil lengths

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    Physical map of fiber optic gyroscope

    Fig. 7. Physical map of fiber optic gyroscope

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    Relationship between detected phase and input angular velocity

    Fig. 8. Relationship between detected phase and input angular velocity

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    • Table 1. Zero-bias stability and random walk coefficient of fiber optic gyroscope with mid-mounted structure

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      Table 1. Zero-bias stability and random walk coefficient of fiber optic gyroscope with mid-mounted structure

      Number ofexperimentsZero-bias stability Bs /[(°)·h-1]Random walkcoefficient /[(°)·h-1/2]
      10.113880.00620
      20.070540.00380
      30.092420.00405
      40.104410.00643
      50.074240.00653
      Average value0.091100.00541

    • Table 2. Zero-bias stability and random walk coefficient of fiber optic gyroscope with offset structure

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      Table 2. Zero-bias stability and random walk coefficient of fiber optic gyroscope with offset structure

      Number ofexperimentsBias stability Bs /[(°)·h-1]Random walkcoefficient /[(°)·h-1/2]
      10.153390.00537
      20.118090.00589
      30.091570.00415
      40.122320.00629
      50.108550.00508
      Average value0.118780.00536
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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

    Topics

    laser devices and laser physics
    Lasers and Laser Optics
    Laser physics
    laser manufacturing
    Instrumentation, Measurement and Metrology