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An Underground Fiber Cable Identification Method Based on Laser Interferometer
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DOI：10.1109/JLT.2024.3431284.png)
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摘要
En 中文
The maintenance and repair of optical fiber networks often require the identification of underground cables among a group of buried ones. Presently, the commonly used methods are either inefficient or harmful to the fiber cable. In this article, we evaluate the effectiveness of fiber optic vibration sensing method on underground fiber cable identification scenario, and propose an underground fiber cable identification method based on laser interferometer. We demonstrate it on the 40-km urban fiber cable connecting Tsinghua University and Yongding Road. It can give an obvious and correct response to the knock event, and can act as a complementation of DAS system in fiber cable identification scenario.
Keyword:
Optical fiber cables
Vibrations
Optical fiber networks
Optical fibers
Optical interferometry
Time-domain analysis
Fiber lasers
Fiber cable identification
laser interferometry
urban fiber link
