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Laser & Optoelectronics Progress, Volume. 62, Issue 19, 1906025(2025)

Sub-Pulse Spatial Resolution Sensing Method Based on Brillouin Frequency Shift and Power Demodulation (Invited)

Yangtao Hou1, Shuangshuang Liu2, Zhe Ma1,2、*, Jianzhong Zhang1,2、**, Xinli Zhang1, and Mingjiang Zhang1,2
Author Affiliations
  • 1College of Physics and Optical Engineering, Taiyuan University of Technology, Taiyuan 030024, Shanxi , China
  • 2Key Laboratory of Advanced Transducers and Intelligent Control System, Ministry of Education, Taiyuan University of Technology, Taiyuan 030024, Shanxi , China
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    AbstractGet PDF(in Chinese)
    Figures&Tables (9)
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    References (31)
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    Figures & Tables(9)
    Schematic diagrams of pulse superposition principle. (a) Power measure process; (b) BGS measure process

    Fig. 1. Schematic diagrams of pulse superposition principle. (a) Power measure process; (b) BGS measure process

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    Schematic diagram of the principle based on BFS and power joint demodulation method

    Fig. 2. Schematic diagram of the principle based on BFS and power joint demodulation method

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    Simulation results of BFS and power versus the length of event zone when the temperature of event zone is 60 ℃. (a) BFS; (b) power (measured by voltage)

    Fig. 3. Simulation results of BFS and power versus the length of event zone when the temperature of event zone is 60 ℃. (a) BFS; (b) power (measured by voltage)

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    Simulation results of BFS versus the length and temperature of event zone. (a) Variation in BFS with the length of event zone at different temperatures of event zone; (b) fitting result of kslope and temperature of event zone

    Fig. 4. Simulation results of BFS versus the length and temperature of event zone. (a) Variation in BFS with the length of event zone at different temperatures of event zone; (b) fitting result of kslope and temperature of event zone

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    Simulation results of power difference versus the length and temperature ofevent zone. (a) Variation in power difference with the length of event zone at different temperatures of event zone (measured by voltage); (b) fitting result of aslope and temperature of event zone

    Fig. 5. Simulation results of power difference versus the length and temperature ofevent zone. (a) Variation in power difference with the length of event zone at different temperatures of event zone (measured by voltage); (b) fitting result of aslope and temperature of event zone

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    Schematic diagram of the BODTR experimental device based on BFS and power joint demodulation method

    Fig. 6. Schematic diagram of the BODTR experimental device based on BFS and power joint demodulation method

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    Experimental results of BFS versus length and temperature of event zone. (a) Variation in BFS with the length of event zone at different temperatures of event zone; (b) fitting result of kslope and temperature of event zone

    Fig. 7. Experimental results of BFS versus length and temperature of event zone. (a) Variation in BFS with the length of event zone at different temperatures of event zone; (b) fitting result of kslope and temperature of event zone

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    Experimental results of power difference versus length and temperature of event zone. (a) Variation in power difference with the length of event zone at different temperatures of event zone (measured by voltage); (b) fitting result of aslope and temperature of event zone

    Fig. 8. Experimental results of power difference versus length and temperature of event zone. (a) Variation in power difference with the length of event zone at different temperatures of event zone (measured by voltage); (b) fitting result of aslope and temperature of event zone

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    BFS and power distributions of 10 km fiber. (a) BFS; (b) power (measured by voltage)

    Fig. 9. BFS and power distributions of 10 km fiber. (a) BFS; (b) power (measured by voltage)

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    Yangtao Hou, Shuangshuang Liu, Zhe Ma, Jianzhong Zhang, Xinli Zhang, Mingjiang Zhang. Sub-Pulse Spatial Resolution Sensing Method Based on Brillouin Frequency Shift and Power Demodulation (Invited)[J]. Laser & Optoelectronics Progress, 2025, 62(19): 1906025

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    Paper Information

    Category: Fiber Optics and Optical Communications

    Received: Jun. 11, 2025

    Accepted: Jul. 21, 2025

    Published Online: Sep. 29, 2025

    The Author Email: Zhe Ma (mazhe@tyut.edu.cn), Jianzhong Zhang (zhangjianzhong@tyut.edu.cn)

    DOI:10.3788/LOP251426

    CSTR:32186.14.LOP251426

    Topics

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