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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 20, Iss. 24 — Nov. 19, 2012
  • pp: 26942–26949

Dynamic BOTDA measurements based on Brillouin phase-shift and RF demodulation

Javier Urricelqui, Ander Zornoza, Mikel Sagues, and Alayn Loayssa  »View Author Affiliations


Optics Express, Vol. 20, Issue 24, pp. 26942-26949 (2012)
http://dx.doi.org/10.1364/OE.20.026942


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Abstract

We demonstrate a novel dynamic BOTDA sensor based, for the first time to our knowledge, on the use of the Brillouin phase-shift in addition to the conventional Brillouin gain. This provides the advantage of measurements that are largely immune to variations in fiber attenuation or changes in pump pulse power. Furthermore, the optical detection deployed leads to an enhanced precision or measurement time and to the broadening of the measurement range. Proof-of-concept experiments demonstrate 1.66-kHz measurement rate with 1-m resolution over a 160 m sensing fiber length. Moreover, a measurement range of 2560 µε with a precision of 20 µε is successfully proved.

© 2012 OSA

OCIS Codes
(040.2840) Detectors : Heterodyne
(060.2370) Fiber optics and optical communications : Fiber optics sensors
(290.5900) Scattering : Scattering, stimulated Brillouin

ToC Category:
Detectors

History
Original Manuscript: September 5, 2012
Revised Manuscript: October 31, 2012
Manuscript Accepted: November 7, 2012
Published: November 14, 2012

Citation
Javier Urricelqui, Ander Zornoza, Mikel Sagues, and Alayn Loayssa, "Dynamic BOTDA measurements based on Brillouin phase-shift and RF demodulation," Opt. Express 20, 26942-26949 (2012)
http://www.opticsinfobase.org/oe/abstract.cfm?URI=oe-20-24-26942


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References

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