Distributed Acoustic Sensing Based on Coherent Microwave Photonics Interferometry

A microwave photonics method has been developed for measuring distributed acoustic signals. This method uses microwave-modulated low coherence light as a probe to interrogate distributed in-fiber interferometers, which are used to measure acoustic-induced strain. By sweeping the microwave frequency...

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Bibliographic Details

Published in:	Sensors
Main Authors:	Liwei Hua, Xuran Zhu, Baokai Cheng, Yang Song, Qi Zhang, Yongji Wu, Lawrence C. Murdoch, Erin R. Dauson, Carly M. Donahue, Hai Xiao
Format:	Article
Language:	English
Published:	MDPI AG 2021-10-01
Subjects:	fiber optics sensors microwave photonics interferometry distributed acoustic sensing (DAS) optical frequency domain reflectometry (OFDR)
Online Access:	https://www.mdpi.com/1424-8220/21/20/6784