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Optics Express

Optics Express

  • Editor: Andrew M. Weiner
  • Vol. 22, Iss. 11 — Jun. 2, 2014
  • pp: 13804–13810

Ultra-long high-sensitivity Φ-OTDR for high spatial resolution intrusion detection of pipelines

Fei Peng, Han Wu, Xin-Hong Jia, Yun-Jiang Rao, Zi-Nan Wang, and Zheng-Pu Peng  »View Author Affiliations


Optics Express, Vol. 22, Issue 11, pp. 13804-13810 (2014)
http://dx.doi.org/10.1364/OE.22.013804


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Abstract

An ultra-long phase-sensitive optical time domain reflectometry (Φ-OTDR) that can achieve high-sensitivity intrusion detection over 131.5km fiber with high spatial resolution of 8m is presented, which is the longest Φ-OTDR reported to date, to the best of our knowledge. It is found that the combination of distributed Raman amplification with heterodyne detection can extend the sensing distance and enhances the sensitivity substantially, leading to the realization of ultra-long Φ-OTDR with high sensitivity and spatial resolution. Furthermore, the feasibility of applying such an ultra-long Φ-OTDR to pipeline security monitoring is demonstrated and the features of intrusion signal can be extracted with improved SNR by using the wavelet detrending/denoising method proposed.

© 2014 Optical Society of America

OCIS Codes
(060.2370) Fiber optics and optical communications : Fiber optics sensors
(280.0280) Remote sensing and sensors : Remote sensing and sensors
(290.5870) Scattering : Scattering, Rayleigh
(290.5910) Scattering : Scattering, stimulated Raman

ToC Category:
Sensors

History
Original Manuscript: March 7, 2014
Revised Manuscript: May 5, 2014
Manuscript Accepted: May 21, 2014
Published: May 30, 2014

Citation
Fei Peng, Han Wu, Xin-Hong Jia, Yun-Jiang Rao, Zi-Nan Wang, and Zheng-Pu Peng, "Ultra-long high-sensitivity Φ-OTDR for high spatial resolution intrusion detection of pipelines," Opt. Express 22, 13804-13810 (2014)
http://www.opticsinfobase.org/oe/abstract.cfm?URI=oe-22-11-13804


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References

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