外文题目: High spatial resolution phase-sensitive optical time domain reflectometer with a frequency-swept pulse
作者: Lu, Bin; Pan, Zhengqing; Wang, Zhaoyong; Zheng, Hanrong; Ye, Qing; Qu, Ronghui; Cai, Haiwen
刊名: Opt. Lett.
年: 2017 卷: 42 期: 3 页： 391--394
英文摘要:
A high spatial resolution phase-sensitive optical time domain reflectometer (phi-OTDR) with an optical frequency-swept pulse (FSP) is proposed, and the experimental results are presented in the Letter. The FSP f-OTDR uses optical pulses with linear frequency modulation with higher pulse energy for longer sensing fiber and uses matched filter in the receiver to compress the processed pulse width. Thus, the contradiction between spatial resolution and the working distance in ordinary f-OTDR is relaxed. A spatial resolution of 30 cm, a sensing distance of 19.8 km, and a signal-to-noise ratio of 10 dB for vibration sensing were obtained experimentally. To our best of our knowledge, this is the first time that a sub-meter spatial resolution over such a long sensing range has been reported sensors. (C) 2017 Optical Society of America.


文献类型: 期刊论文
正文语种: English
收录类别: SCI
DOI: 10.1364/OL.42.000391


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