Φ-OFDR based distributed acoustic sensor with 12-cm spatial resolution and sub − n ε / Hz strain resolution

He Li; Qingwen Liu; Dian Chen; Yuanpeng Deng; Zuyuan He

doi:10.1364/OFS.2020.T3.60

Optical Fiber Sensors Conference 2020 Special Edition
OSA Technical Digest (Optica Publishing Group, 2020),
paper T3.60
•https://doi.org/10.1364/OFS.2020.T3.60

Φ-OFDR based distributed acoustic sensor with 12-cm spatial resolution and $sub - n ε / \sqrt{Hz}$ strain resolution

He Li, Qingwen Liu, Dian Chen, Yuanpeng Deng, and Zuyuan He

Optical Fiber Sensors 2020

Washington, DC United States
8–12 June 2020
ISBN: 978-1-55752-307-5

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Poster Session I (T3)

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H. Li, Q. Liu, D. Chen, Y. Deng, and Z. He, "Φ-OFDR based distributed acoustic sensor with 12-cm spatial resolution and sub − n ε / Hz strain resolution," in Optical Fiber Sensors Conference 2020 Special Edition, G. Cranch, A. Wang, M. Digonnet, and P. Dragic, eds., OSA Technical Digest (Optica Publishing Group, 2020), paper T3.60.

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Abstract

A phase-sensitive optical frequency domain reflectometry based distributed acoustic sensor is proposed. The waveform of a frequency-chirped vibration is recovered with the spatial resolution of 12-cm and the strain resolution of 667-pε/√Hz.

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