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Acta Optica Sinica, Volume. 41, Issue 13, 1306006(2021)

Design and Implementation for Ultra-Long-Distance Multi-Point Sensing System Based on Random Fiber Laser

Jianhua Cao, Shengtao Lin, Zinan Wang*, Bing Han, and Yunjiang Rao
Author Affiliations
  • Key Laboratory of Optical Fiber Sensing and Communications, University of Electronic Science and Technology of China, Chengdu, Sichuan 611731, China
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    AbstractGet PDF(in Chinese)
    Figures&Tables (11)
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    References (32)
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    Figures & Tables(11)
    Flow chart of equation solution

    Fig. 1. Flow chart of equation solution

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    Simulation parameters. (a) Raman gain coefficient; (b) loss coefficient; (c) Rayleigh scattering coefficient

    Fig. 2. Simulation parameters. (a) Raman gain coefficient; (b) loss coefficient; (c) Rayleigh scattering coefficient

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    Schematic diagram of second-order random fiber laser

    Fig. 3. Schematic diagram of second-order random fiber laser

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    Spectra of second-order full-open-cavity random fiber laser. (a) Simulated results with different pump powers; (b) experimental result

    Fig. 4. Spectra of second-order full-open-cavity random fiber laser. (a) Simulated results with different pump powers; (b) experimental result

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    Schematic diagram of second-order half-open-cavity random fiber laser system

    Fig. 5. Schematic diagram of second-order half-open-cavity random fiber laser system

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    Results of second-order half-open-cavity random fiber laser system under 2 W pump power. (a) Simulation result; (b) experimental result

    Fig. 6. Results of second-order half-open-cavity random fiber laser system under 2 W pump power. (a) Simulation result; (b) experimental result

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    Schematic diagram of long-distance multi-point sensing system

    Fig. 7. Schematic diagram of long-distance multi-point sensing system

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    Simulation results of different fiber lengths under 2.3 W pump power. (a) 125 km SMF; (b) 150 km SMF; (c) 175 km SMF; (d) 200 km SMF

    Fig. 8. Simulation results of different fiber lengths under 2.3 W pump power. (a) 125 km SMF; (b) 150 km SMF; (c) 175 km SMF; (d) 200 km SMF

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    Experimental result of 150 km sensing system

    Fig. 9. Experimental result of 150 km sensing system

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    Center wavelength versus micro strain curve

    Fig. 10. Center wavelength versus micro strain curve

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    • Table 1. Parameters for simulation

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      Table 1. Parameters for simulation

      Fiber parameterValueFiber parameterValue
      λ0,λ1 /nm1365,1461g1 /(W-1·km-1)0.53
      α0,α1 /(dB·km-1)0.31,0.24h /(J·s)6.6×10-34
      ε0,ε1 /km-11×10-4,6×10-5T /K298
      Δf1,Δf2 /THz0.18,0.25KB /(J·K-1)1.38×10-23
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    Jianhua Cao, Shengtao Lin, Zinan Wang, Bing Han, Yunjiang Rao. Design and Implementation for Ultra-Long-Distance Multi-Point Sensing System Based on Random Fiber Laser[J]. Acta Optica Sinica, 2021, 41(13): 1306006

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    Paper Information

    Category: Fiber Optics and Optical Communications

    Received: Mar. 1, 2021

    Accepted: Apr. 21, 2021

    Published Online: Jul. 11, 2021

    The Author Email: Wang Zinan (znwang@uestc.edu.cn)

    DOI:10.3788/AOS202141.1306006

    Topics

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