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Wideband Fully-Distributed Vibration Sensing by Using UWFBG Based Coherent OTDR

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Abstract

A scheme combining coherent OTDR with UWFBG to realize wideband and high sensitive distributed vibration sensing is proposed. Frequency response from 2Hz to 5kHz and 4-m spatial resolution are experimentally demonstrated along 1.3km fiber.

© 2017 Optical Society of America

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