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Chinese Optics Letters

Chinese Optics Letters

| PUBLISHED MONTHLY BY CHINESE LASER PRESS AND DISTRIBUTED BY OSA

  • Vol. 3, Iss. 11 — Nov. 10, 2005
  • pp: 633–635

Full distributed fiber optical sensor for intrusion detection in application to buried pipelines

Jianzhong Gao, Zhuangde Jiang, Yulong Zhao, Li Zhu, and Guoxian Zhao  »View Author Affiliations


Chinese Optics Letters, Vol. 3, Issue 11, pp. 633-635 (2005)


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Abstract

Based on the microbend effect of optical fiber, a distributed sensor for real-time continuous monitoring of intrusion in application to buried pipelines is proposed. The sensing element is a long cable with a special structure made up of an elastic polymer wire, an optical fiber, and a metal wire. The damage point is located with an embedded optical time domain reflectometry (OTDR) instrument. The intrusion types can be indicated by the amplitude of output voltage. Experimental results show that the detection system can alarm adequately under abnormal load and can locate the intrusion point within 22.4 m for distance of 3.023 km.

© 2005 Chinese Optics Letters

OCIS Codes
(060.2310) Fiber optics and optical communications : Fiber optics
(060.2340) Fiber optics and optical communications : Fiber optics components
(060.2370) Fiber optics and optical communications : Fiber optics sensors

Citation
Jianzhong Gao, Zhuangde Jiang, Yulong Zhao, Li Zhu, and Guoxian Zhao, "Full distributed fiber optical sensor for intrusion detection in application to buried pipelines," Chin. Opt. Lett. 3, 633-635 (2005)
http://www.opticsinfobase.org/col/abstract.cfm?URI=col-3-11-633

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