Ultra long distance distributed fiber-optic system for intrusion detection

30 November 2012 Ultra long distance distributed fiber-optic system for intrusion detection

Dongsheng Tu, Shangran Xie, Zhaogong Jiang, Min Zhang

Author Affiliations +

Proceedings Volume 8561, Advanced Sensor Systems and Applications V; 85611W (2012) https://doi.org/10.1117/12.2001292
Event: Photonics Asia, 2012, Beijing, China

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.

Citation Download Citation

Dongsheng Tu, Shangran Xie, Zhaogong Jiang, and Min Zhang "Ultra long distance distributed fiber-optic system for intrusion detection", Proc. SPIE 8561, Advanced Sensor Systems and Applications V, 85611W (30 November 2012); https://doi.org/10.1117/12.2001292

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