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Conferences > OFS > 2018 > ThE > ThE25

High spatial resolution Φ-OTDR with long sensing distance

Bin Lu, Hanrong Zheng, Zhaoyong Wang, Qing Ye, Fang Wei, Ronghun Qu, and Haiwen Cai

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Abstract

A high spatial resolution Φ-OTDR that can achieve sensing distance of 75km without any optical inline amplifier and spatial resolution of 0.95m is presented. To our knowledge, the sensing distance is the longest in Φ-OTDR-based distributed vibration sensing without optical inline amplifier and with sub-meter spatial resolution.

© 2018 The Author(s)

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