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Acta Optica Sinica, Volume. 41, Issue 13, 1306008(2021)

Research on Dynamic Range Expansion Method of Fiber-Optic Distributed Acoustic Sensing

Zhe Ma1,2、**, Yixuan Wang1, Junfeng Jiang1、*, Shuang Wang1, Jiande Zhang3, Ning Yang3, Tianhua Xu1, Zhenyang Ding1, and Tiegen Liu1
Author Affiliations
  • 1Tianjin Optical Fiber Sensing Engineering Center, Institute of Optical Fiber Sensing of Tianjin University, Key Laboratory of Opto-Electronics Information Technology, Ministry of Education, School of Precision Instrument and Opto-Electronics Engineering, Tianjin University, Tianjin 300072, China
  • 2Key Laboratory of Advanced Transducers and Intelligent Control System, Ministry of Education and Shanxi Province, College of Physics and Optoelectronics, Taiyuan University of Technology, Taiyuan, Shanxi 0 30024, China
  • 3Shandong Institute of Aerospace Electronic Technology, Yantai, Shandong 264000, China
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    Schematic diagrams of experimental system. (a) Dynamic range extended distributed optical-fiber sensing experimental device; (b) Schematic diagram of LFM sideband modulation pulse

    Fig. 1. Schematic diagrams of experimental system. (a) Dynamic range extended distributed optical-fiber sensing experimental device; (b) Schematic diagram of LFM sideband modulation pulse

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    Discrete theoretical model of LFM pulse DAS

    Fig. 2. Discrete theoretical model of LFM pulse DAS

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    Coherent time domain signal and envelope simulation results. (a) 40 MHz frequency-modulated bandwidth overall display; (b) 40 MHz frequency-modulated bandwidth local display; (c) 200 MHz frequency-modulated bandwidth overall display; (d) 200 MHz frequency-modulated bandwidth local display,(b) and (d) correspond to dotted ellipse parts in (a) and (c), respectively

    Fig. 3. Coherent time domain signal and envelope simulation results. (a) 40 MHz frequency-modulated bandwidth overall display; (b) 40 MHz frequency-modulated bandwidth local display; (c) 200 MHz frequency-modulated bandwidth overall display; (d) 200 MHz frequency-modulated bandwidth local display,(b) and (d) correspond to dotted ellipse parts in (a) and (c), respectively

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    Experimental results of coherent time domain signals and envelopes under different LFM bandwidths. (a) 40 MHz; (b) 120 MHz; (c) 200 MHz; (d) 400 MHz

    Fig. 4. Experimental results of coherent time domain signals and envelopes under different LFM bandwidths. (a) 40 MHz; (b) 120 MHz; (c) 200 MHz; (d) 400 MHz

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    Experimental results with frequency-modulated bandwidth of 40 MHz

    Fig. 5. Experimental results with frequency-modulated bandwidth of 40 MHz

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    Experimental results with frequency-modulated bandwidth of 200 MHz

    Fig. 6. Experimental results with frequency-modulated bandwidth of 200 MHz

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    Zhe Ma, Yixuan Wang, Junfeng Jiang, Shuang Wang, Jiande Zhang, Ning Yang, Tianhua Xu, Zhenyang Ding, Tiegen Liu. Research on Dynamic Range Expansion Method of Fiber-Optic Distributed Acoustic Sensing[J]. Acta Optica Sinica, 2021, 41(13): 1306008

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    Paper Information

    Category: Fiber Optics and Optical Communications

    Received: Mar. 15, 2021

    Accepted: Apr. 29, 2021

    Published Online: Jul. 11, 2021

    The Author Email: Ma Zhe (mazhe315@tju.edu.cn), Jiang Junfeng (jiangjfjxu@tju.edu.cn)

    DOI:10.3788/AOS202141.1306008

    Topics

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