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Proceedings Paper

Long-distance fiber-optic Φ-OTDR intrusion sensing system
Author(s): Yun-Jiang Rao; Jun Luo; Zeng-Ling Ran; Jian-Feng Yue; Xiao-Dong Luo; Zhi Zhou
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Paper 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.

Paper Details

Date Published: 5 October 2009
PDF: 4 pages
Proc. SPIE 7503, 20th International Conference on Optical Fibre Sensors, 75031O (5 October 2009); doi: 10.1117/12.835324
Show Author Affiliations
Yun-Jiang Rao, Univ. of Electronic Science and Technology of China (China)
Chongqing Univ. (China)
Jun Luo, Univ. of Electronic Science and Technology of China (China)
Zeng-Ling Ran, Univ. of Electronic Science and Technology of China (China)
Jian-Feng Yue, Univ. of Electronic Science and Technology of China (China)
Xiao-Dong Luo, Univ. of Electronic Science and Technology of China (China)
Zhi Zhou, Harbin Institute of Technology (China)


Published in SPIE Proceedings Vol. 7503:
20th International Conference on Optical Fibre Sensors
Julian D. C. Jones, Editor(s)

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