True Phase Measurement of Distributed Vibration Sensors Based on Heterodyne $\varphi $-OTDR

True Phase Measurement of Distributed Vibration Sensors Based on Heterodyne $\varphi $-OTDR

We demonstrate a method to truly measure the phase change originated from external vibration by heterodyne phase-sensitive optical time-domain reflectometer (φ-OTDR). The method of differential phase between sections of a sensing fiber is explored. In order to truly measure the phase chan...

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Bibliographic Details
Main Authors: Huanhuan Liu, Fufei Pang, Longbao Lv, Xuanwei Mei, Yingxiong Song, Jian Chen, Tingyun Wang
Format: Article
Language:English
Published: IEEE 2018-01-01
Series:IEEE Photonics Journal
Subjects:
Fiber optics sensors
optical domain reflectometry
Rayleigh scattering
Online Access:https://ieeexplore.ieee.org/document/8249791/

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