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Chinese Journal of Lasers, Volume. 50, Issue 19, 1906002(2023)

Optical Fiber Brillouin Scattering Spectrum Fitting of Pulsed Light

Zhi Yang1,2, Zhen Wang1、*, Yongqian Li1,2, and Lü Anqiang1,2
Author Affiliations
  • 1Department of Electronic and Communication Engineering, North China Electric Power University, Baoding 071003, Hebei , China
  • 2Hebei Key Laboratory of Power Internet of Things Technology, North China Electric Power University, Baoding 071003, Hebei , China
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    AbstractGet PDF(in Chinese)
    Figures&Tables (10)
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    References (18)
    Cited By (2)
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    Figures & Tables(10)
    Frequency-domain model of fiber Brillouin Stokes scattering system

    Fig. 1. Frequency-domain model of fiber Brillouin Stokes scattering system

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    Block diagram of Brillouin optical time domain reflectometry (BOTDR) system

    Fig. 2. Block diagram of Brillouin optical time domain reflectometry (BOTDR) system

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    Curve fitting comparison at 50 ns pulse width

    Fig. 3. Curve fitting comparison at 50 ns pulse width

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    Curve fitting comparison at 20 ns pulse width

    Fig. 4. Curve fitting comparison at 20 ns pulse width

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    Curve fitting comparison at 10 ns pulse width

    Fig. 5. Curve fitting comparison at 10 ns pulse width

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    Comparison of fitting indexes at 50 ns pulse width. (a) SSE; (b) RMSE; (c) MSE; (d) R2

    Fig. 6. Comparison of fitting indexes at 50 ns pulse width. (a) SSE; (b) RMSE; (c) MSE; (d) R2

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    Comparison of fitting indexes at 20 ns pulse width. (a) SSE; (b) RMSE; (c) MSE; (d) R2

    Fig. 7. Comparison of fitting indexes at 20 ns pulse width. (a) SSE; (b) RMSE; (c) MSE; (d) R2

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    Comparison of fitting indexes at 10 ns pulse width. (a) SSE; (b) RMSE; (c) MSE; (d) R2

    Fig. 8. Comparison of fitting indexes at 10 ns pulse width. (a) SSE; (b) RMSE; (c) MSE; (d) R2

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    • Table 1. Results of parameter fitting

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      Table 1. Results of parameter fitting

      Pulse width /nsAαfB /GHz
      Lorentz functionPulsed light functionLorentz functionPulsed light functionLorentz functionPulsed light function
      500.00049490.00049290.18780.1649010.8549510.85505
      200.00045490.00044090.20680.1355010.8556110.85622
      100.00047520.00042840.25680.0726410.8583010.85875

    • Table 2. Fitting error

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      Table 2. Fitting error

      Pulse width /nsFitting error
      Lorentz functionPulsed light function
      500.0000034470.000003130
      200.0000030770.000001443
      100.0000049960.000001632
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    Zhi Yang, Zhen Wang, Yongqian Li, Lü Anqiang. Optical Fiber Brillouin Scattering Spectrum Fitting of Pulsed Light[J]. Chinese Journal of Lasers, 2023, 50(19): 1906002

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    Paper Information

    Category: Fiber optics and optical communication

    Received: Sep. 1, 2022

    Accepted: Oct. 19, 2022

    Published Online: Oct. 18, 2023

    The Author Email: Wang Zhen (1073558359@qq.com)

    DOI:10.3788/CJL221196

    Topics

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