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Optics Letters

Optics Letters


  • Editor: Alan E. Willner
  • Vol. 34, Iss. 12 — Jun. 15, 2009
  • pp: 1858–1860

Fiber-optic intrinsic distributed acoustic emission sensor for large structure health monitoring

Sheng Liang, Chunxi Zhang, Wentai Lin, Lijing Li, Chen Li, Xiujuan Feng, and Bo Lin  »View Author Affiliations

Optics Letters, Vol. 34, Issue 12, pp. 1858-1860 (2009)

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A fiber-optic intrinsic distributed acoustic emission (AE) sensor is proposed. By measuring the time delay of two signals from two Mach–Zehnder interferometers, the location of AE can be deduced, and the corresponding sensor is experimentally verified to be feasible with a 206 m average location error in a 20 km sensing range, which shows that this proposed sensor is applicable for distributed AE sensing for large structure health monitoring, with the unique advantages of low cost, simple configuration, and long sensing range. The limitations of the proposed sensor are also discussed, and the future work is presented.

© 2009 Optical Society of America

OCIS Codes
(060.2370) Fiber optics and optical communications : Fiber optics sensors
(120.0280) Instrumentation, measurement, and metrology : Remote sensing and sensors

ToC Category:
Instrumentation, Measurement, and Metrology

Original Manuscript: March 3, 2009
Revised Manuscript: May 3, 2009
Manuscript Accepted: May 11, 2009
Published: June 11, 2009

Sheng Liang, Chunxi Zhang, Wentai Lin, Lijing Li, Chen Li, Xiujuan Feng, and Bo Lin, "Fiber-optic intrinsic distributed acoustic emission sensor for large structure health monitoring," Opt. Lett. 34, 1858-1860 (2009)

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