Long-distance fiber-optic &#934;-OTDR intrusion sensing system

Yun-Jiang Rao; Jun Luo; Zeng-Ling Ran; Jian-Feng Yue; Xiao-Dong Luo; Zhi Zhou

doi:10.1117/12.835324

5 October 2009 Long-distance fiber-optic Φ-OTDR intrusion sensing system

Yun-Jiang Rao, Jun Luo, Zeng-Ling Ran, Jian-Feng Yue, Xiao-Dong Luo, Zhi Zhou

Proceedings Volume 7503, 20th International Conference on Optical Fibre Sensors; 75031O (2009) https://doi.org/10.1117/12.835324
Event: 20th International Conference on Optical Fibre Sensors, 2009, Edinburgh, United Kingdom

Abstract

A novel fiber-optic phase-sensitive optical time-domain reflectometer (Φ-OTDR) distributed sensing system is proposed and demonstrated for long-distance intrusion monitoring. By using the bi-directional Raman optical amplification technology, even intrusion signal detection along the whole sensing distance of ~62km has been demonstrated, resulting in the longest and the most sensitive Φ -OTDR distributed sensing system reported so far, to the best of our knowledge. In addition, high-power single-mode fiber laser with ultra-narrow line-width and special optical fiber cable encapsulated by fiber reinforced plastic (FRP) are used to further enhance the intrusion detection sensitivity, respectively.

Citation Download Citation

Yun-Jiang Rao, Jun Luo, Zeng-Ling Ran, Jian-Feng Yue, Xiao-Dong Luo, and Zhi Zhou "Long-distance fiber-optic Φ-OTDR intrusion sensing system", Proc. SPIE 7503, 20th International Conference on Optical Fibre Sensors, 75031O (5 October 2009); https://doi.org/10.1117/12.835324

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