Open AccessDistributed optical fiber vibration sensor based on spectrum analysis of Polarization-OTDR system
Author(s) -
Ziyi Zhang,
Xiaoyi Bao
Publication year - 2008
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.16.010240
Subject(s) - optical time domain reflectometer , optics , fast fourier transform , fiber optic sensor , polarization (electrochemistry) , optical fiber , vibration , distributed acoustic sensing , polarization maintaining optical fiber , image resolution , optical fiber cable , materials science , acoustics , physics , computer science , chemistry , algorithm
A fully distributed optical fiber vibration sensor is demonstrated based on spectrum analysis of Polarization-OTDR system. Without performing any data averaging, vibration disturbances up to 5 kHz is successfully demonstrated in a 1km fiber link with 10m spatial resolution. The FFT is performed at each spatial resolution; the relation of the disturbance at each frequency component versus location allows detection of multiple events simultaneously with different and the same frequency components.