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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Vydané v:	Optics and lasers in engineering Ročník 161; s. 107318
Hlavní autori:	Li, Peihong, Wang, Yu, Yin, Kang, Liu, Xin, Bai, Qing, Zhang, Hongjuan, Gao, Yan, Jin, Baoquan
Médium:	Journal Article
Jazyk:	English
Vydavateľské údaje:	Elsevier Ltd 01.02.2023
Predmet:	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
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