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Proceedings Paper

Ultra long distance distributed fiber-optic system for intrusion detection
Author(s): Dongsheng Tu; Shangran Xie; Zhaogong Jiang; Min Zhang
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Paper Abstract

This paper research an ultra long distance distributed fiber-optic intrusion detects system. Laser source is amplified and modulated before input to the dual Mach-Zehnder interferometers. This ensures the system can detect longer distance with less loss and nonlinearity than continuous laser input. The cross correlation algorithm is considered to locate the vibration event after the polarization controlled of the optical source, and the locate precision is also discussed. Finally, an experiment result is given as the sensing fiber length is 112km with the location precision about 160m.

Paper Details

Date Published: 30 November 2012
PDF: 6 pages
Proc. SPIE 8561, Advanced Sensor Systems and Applications V, 85611W (30 November 2012); doi: 10.1117/12.2001292
Show Author Affiliations
Dongsheng Tu, Ningbo Nuoke Electronic Technology Development Co., Ltd. (China)
Shangran Xie, Tsinghua Univ. (China)
Zhaogong Jiang, Ningbo Nuoke Electronic Technology Development Co., Ltd. (China)
Min Zhang, Tsinghua Univ. (China)

Published in SPIE Proceedings Vol. 8561:
Advanced Sensor Systems and Applications V
Brian Culshaw; Yanbiao Liao; Anbo Wang; Xiaoyi Bao; Xudong Fan, Editor(s)

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