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18 March 2024 Distributed optical fiber fusion sensing system based on dual light source and pulse precision delay technology
Xiaohui Tang, Bozhong Li, Meng Xia, Fang Chen, Ying Wang, Guangzhe Wu, Xuejing Qiu, Min Zhou, Jinglin Sui, Yu Han
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Proceedings Volume 13104, Advanced Fiber Laser Conference (AFL2023); 131040W (2024) https://doi.org/10.1117/12.3021600
Event: Advanced Fiber Laser Conference (AFL2023), 2023, Shenzhen, China
Abstract
This paper proposes a Brillouin and Rayleigh fusion system for multi-parameter monitoring of power OPGW cables. Temperature, strain, and vibration measurements are important indicators for safe cable operation of OPGW cables. Temperature monitoring helps detect ice-coating, mountain fire, and lightning. Strain measures cable stress, fiber core safety, ice-coating, and fatigue damage caused by wind-induced vibrations. Vibration monitoring is useful for ice covering and wind vibration. The proposed system overcomes limitations such as nonlinear effects and limited sensing distance. By using a fixed delay of 500ns, mutual position calibration of temperature/strain and vibration measurements is achieved. The system uses a two-wavelength distributed optical fiber fusion scheme with dual light sources, ensuring no interference or degradation due to index conflicts.
(2024) Published by SPIE. Downloading of the abstract is permitted for personal use only.
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Xiaohui Tang, Bozhong Li, Meng Xia, Fang Chen, Ying Wang, Guangzhe Wu, Xuejing Qiu, Min Zhou, Jinglin Sui, and Yu Han "Distributed optical fiber fusion sensing system based on dual light source and pulse precision delay technology", Proc. SPIE 13104, Advanced Fiber Laser Conference (AFL2023), 131040W (18 March 2024); https://doi.org/10.1117/12.3021600
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KEYWORDS
Sensing systems
Optical fibers
Optical sensing
Temperature metrology
Optical fiber cables
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