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Acta Optica Sinica, Volume. 37, Issue 9, 0906001(2017)

Effect of Carrier Phase Bias on Demodulation of Fiber-Optic Seismometer

Fei Liu1, Han Yan2, Bo Hua2, Xiaoping Zheng1, and Min Zhang3、*
Author Affiliations
  • 1 Department of Electronic Engineering, Tsinghua University, Beijing 100084, China
  • 2 System Engineering Research Institute, China State Shipbuilding Corporation, Beijing 100094, China
  • 3 Institute of Ocean Research, Peking University, Beijing 100871, China
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    Figures & Tables(8)
    Diagram of interferometric fiber-optic detector based on heterodyne scheme

    Fig. 1. Diagram of interferometric fiber-optic detector based on heterodyne scheme

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    Signal demodulation diagram in heterodyne scheme

    Fig. 2. Signal demodulation diagram in heterodyne scheme

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    Theoretical and simulation results of THD versus signal amplitude. (a) fs=200 Hz, frep=200 kHz, fc=50 kHz; (b) fs=1 kHz, frep=200 kHz, fc=50 kHz; (c) fs=200 Hz, frep=400 kHz, fc=50 kHz; (d) fs=200 Hz, frep=200 kHz, fc=25 kHz

    Fig. 3. Theoretical and simulation results of THD versus signal amplitude. (a) fs=200 Hz, frep=200 kHz, fc=50 kHz; (b) fs=1 kHz, frep=200 kHz, fc=50 kHz; (c) fs=200 Hz, frep=400 kHz, fc=50 kHz; (d) fs=200 Hz, frep=200 kHz, fc=25 kHz

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    Theoretical and simulation results of maximum THD versus carrier phase bias. (a) fs=200 Hz, frep=200 kHz, fc=50 kHz; (b) fs=1 kHz, frep=200 kHz, fc=50 kHz; (c) fs=200 Hz, frep=400 kHz, fc=50 kHz; (d) fs=200 Hz, frep=200 kHz, fc=25 kHz

    Fig. 4. Theoretical and simulation results of maximum THD versus carrier phase bias. (a) fs=200 Hz, frep=200 kHz, fc=50 kHz; (b) fs=1 kHz, frep=200 kHz, fc=50 kHz; (c) fs=200 Hz, frep=400 kHz, fc=50 kHz; (d) fs=200 Hz, frep=200 kHz, fc=25 kHz

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    Theoretical and simulation results of RAE versus signal amplitude. (a) fs=200 Hz, frep=200 kHz, fc=50 kHz; (b) fs=1 kHz, frep=200 kHz, fc=50 kHz; (c) fs=200 Hz, frep=400 kHz, fc=50 kHz; (d) fs=200 Hz, frep=200 kHz, fc=25 kHz

    Fig. 5. Theoretical and simulation results of RAE versus signal amplitude. (a) fs=200 Hz, frep=200 kHz, fc=50 kHz; (b) fs=1 kHz, frep=200 kHz, fc=50 kHz; (c) fs=200 Hz, frep=400 kHz, fc=50 kHz; (d) fs=200 Hz, frep=200 kHz, fc=25 kHz

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    Theoretical and simulation results of RAE versus carrier phase bias. (a) fs=200 Hz, frep=200 kHz, fc=50 kHz; (b) fs=1 kHz, frep=200 kHz, fc=50 kHz; (c) fs=200 Hz, frep=400 kHz, fc=50 kHz; (d) fs=200 Hz, frep=200 kHz, fc=25 kHz

    Fig. 6. Theoretical and simulation results of RAE versus carrier phase bias. (a) fs=200 Hz, frep=200 kHz, fc=50 kHz; (b) fs=1 kHz, frep=200 kHz, fc=50 kHz; (c) fs=200 Hz, frep=400 kHz, fc=50 kHz; (d) fs=200 Hz, frep=200 kHz, fc=25 kHz

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    Comparison of demodulation results with and without phase bias. (a) THD without phase bias; (b) THD with phase bias

    Fig. 7. Comparison of demodulation results with and without phase bias. (a) THD without phase bias; (b) THD with phase bias

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    (a) THD versus phase bias; (b) RAE versus phase bias

    Fig. 8. (a) THD versus phase bias; (b) RAE versus phase bias

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    Fei Liu, Han Yan, Bo Hua, Xiaoping Zheng, Min Zhang. Effect of Carrier Phase Bias on Demodulation of Fiber-Optic Seismometer[J]. Acta Optica Sinica, 2017, 37(9): 0906001

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    Paper Information

    Category: Fiber Optics and Optical Communications

    Received: Mar. 6, 2017

    Accepted: --

    Published Online: Sep. 7, 2018

    The Author Email: Zhang Min (1606871001@pku.edu.cn)

    DOI:10.3788/AOS201737.0906001

    Topics

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