Random coding method for coherent detection φ-OTDR without optical amplifier

•Random coding method can bring SNR enhancement without loss of the sensing bandwidth.•The sensing distance can be extended without any light amplification.•System hardware is optimized and the cost is reduced. In this article, a coherent detection phase-sensitive optical time-domain reflectometry (...

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Bibliographic Details

Published in:	Optics and lasers in engineering Vol. 161; p. 107318
Main Authors:	Li, Peihong, Wang, Yu, Yin, Kang, Liu, Xin, Bai, Qing, Zhang, Hongjuan, Gao, Yan, Jin, Baoquan
Format:	Journal Article
Language:	English
Published:	Elsevier Ltd 01.02.2023
Subjects:	Distributed optical fiber vibration sensor Phase-sensitive optical time domain reflectometry Pulse coding Random coding pulse Random coding pulse Phase-sensitive optical time domain reflectometry Pulse coding Distributed optical fiber vibration sensor
ISSN:	0143-8166, 1873-0302
Online Access:	Get full text
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