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Opt Express. 2008 Jul 7;16(14):10240-7.

Distributed optical fiber vibration sensor based on spectrum analysis of Polarization-OTDR system.

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  • 1Physics Department, University of Ottawa, 150 Louis Pasteur, Ottawa, ON, K1N 6N5, Canada.


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.

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