Phase-sensitive optical time-domain reflectometry amplified by gated Raman pump

被引：0
|
作者：
Yi Li
Yi Zhou
Li Zhang
Mengqiu Fan
Jin Li
机构：
[1] University of Electronic Science and Technology of China,Key Laboratory of Optical Fiber Sensing & Communications (Ministry of Education)
来源：
Photonic Sensors | 2015年 / 5卷
关键词：
Fiber optic sensors; Rayleigh scattering; stimulated Raman scattering;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
A long-range phase-sensitive optical time-domain reflectometry is proposed and experimentally demonstrated, based on the gated Raman amplification (RA). This technique can reduce the amplified spontaneous emissions (ASE) noise of the Raman pump while extend the sensing distance. A direct-detection based phase-sensitive optical time-domain reflectometry (Φ-OTDR) with an operation range of 50 km and a spatial resolution of 20 m has been demonstrated. The influence of different delay time of the gated Raman pump on the Φ-OTDR system is also discussed.
引用
收藏
页码：345 / 350
页数：5
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