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Optics Letters

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  • Vol. 36, Iss. 2 — Jan. 15, 2011
  • pp: 232–234

Long-range simplex-coded BOTDA sensor over 120 km distance employing optical preamplification

Marcelo A. Soto, Gabriele Bolognini, and Fabrizio Di Pasquale  »View Author Affiliations


Optics Letters, Vol. 36, Issue 2, pp. 232-234 (2011)
http://dx.doi.org/10.1364/OL.36.000232


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Abstract

In this Letter, we combine the use of optical preamplification at the receiver and optical pulse coding techniques with an optimized modulation format to effectively extend the sensing range of Brillouin optical time-domain anal ysis (BOTDA) sensors. Combining a return-to-zero modulation format with 25% duty cycle and linear gain preamplification allows for temperature and strain measurements over 120 km of standard single-mode fiber with 3 m spatial resolution and an rms strain–temperature accuracy of 3.1 ° C / 60 με respectively.

© 2011 Optical Society of America

OCIS Codes
(060.2370) Fiber optics and optical communications : Fiber optics sensors
(060.4370) Fiber optics and optical communications : Nonlinear optics, fibers
(290.5900) Scattering : Scattering, stimulated Brillouin
(280.4788) Remote sensing and sensors : Optical sensing and sensors

ToC Category:
Fiber Optics and Optical Communications

History
Original Manuscript: July 20, 2010
Revised Manuscript: November 30, 2010
Manuscript Accepted: December 11, 2010
Published: January 12, 2011

Citation
Marcelo A. Soto, Gabriele Bolognini, and Fabrizio Di Pasquale, "Long-range simplex-coded BOTDA sensor over 120km distance employing optical preamplification," Opt. Lett. 36, 232-234 (2011)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-36-2-232


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