✦ LIBER ✦

An intrusion detection sensor based on coherent optical time domain reflector

✍ Scribed by Xiaobin Hong; Hongxiang Guo; Jian Wu; Kun Xu; Yong Zuo; Yan Li; Jintong Lin

Publisher: John Wiley and Sons
Year: 2010
Tongue: English
Weight: 579 KB
Volume: 52
Category: Article
ISSN: 0895-2477
DOI: 10.1002/mop.25602

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✦ Synopsis

Abstract

A distributed fiber optic intrusion detection sensor is proposed, in which a nonbalanced Mach‐Zehnder interferometer is used as phase demodulator, and an optical time domain reflectometer is used as a position detector. The experimental results concluded that the positioning error of ±25m can be achieved along an 8.8‐km single mode fiber. © 2010 Wiley Periodicals, Inc. Microwave Opt Technol Lett 52:2746–2748, 2010; View this article online at wileyonlinelibrary.com. DOI 10.1002/mop.25602

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## Abstract A fiber optic distributed sensor, based on a Sagnac interferometer for determining the location of time‐varying disturbance, is presented in this paper. The proposed distributed sensor constitutes a Sagnac interferometer with an additional time delay fiber loop. Due to the time‐division