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Optics Express

Optics Express

  • Editor: Michael Duncan
  • Vol. 12, Iss. 18 — Sep. 6, 2004
  • pp: 4339–4346

Strain event detection using a double-pulse technique of a Brillouin scattering-based distributed optical fiber sensor

Seok-Beom Cho, Jung-Ju Lee, and Il-Bum Kwon  »View Author Affiliations


Optics Express, Vol. 12, Issue 18, pp. 4339-4346 (2004)
http://dx.doi.org/10.1364/OPEX.12.004339


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Abstract

Stimulated Brillouin scattering in optical fibers can be used to measure strain or temperature in a distributed manner. Brillouin optical time domain analysis (BOTDA) is the most common sensor system based on the Brillouin scattering. To improve the spatial resolution of these measurements, shorter pulses must be used, resulting in reduced signal powers causing a decrease of the dynamic range. In this paper, a double-pulse technique was proposed to enhance the spatial resolution of BOTDA. Experimental results showed that the ability to resolve two adjacent events could be enhanced, about twice, by using a double-pulsed pump light without decreases in the dynamic range.

© 2004 Optical Society of America

OCIS Codes
(060.2370) Fiber optics and optical communications : Fiber optics sensors
(290.5830) Scattering : Scattering, Brillouin

ToC Category:
Research Papers

History
Original Manuscript: July 22, 2004
Revised Manuscript: September 1, 2004
Published: September 6, 2004

Citation
Seok-Beom Cho, Jung-Ju Lee, and Il-Bum Kwon, "Strain event detection using a double-pulse technique of a Brillouin scattering-based distributed optical fiber sensor," Opt. Express 12, 4339-4346 (2004)
http://www.opticsinfobase.org/oe/abstract.cfm?URI=oe-12-18-4339


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References

  1. B. Culshaw and J. P. Dakin, Eds., Optical Fiber Sensors (Boston, London, Artech House, 1989), I and II.
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  6. G. P. Agrawal, Nonlinear Fiber Optics, (Academic Press, Boston, 1989), chap. 9.
  7. M. Niklès, L. Thévenaz, P. A. Robert, �??Brillouin gain spectrim characterization in single-mode optical fibers,�?? J. Lightwave Technol. 15, 1842-1851 (1997). [CrossRef]

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