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Optics Letters

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  • Editor: Alan E. Willner
  • Vol. 38, Iss. 17 — Sep. 1, 2013
  • pp: 3312–3315

Distributed dynamic large strain optical fiber sensor based on the detection of spontaneous Brillouin scattering

Ali Masoudi, Mohammad Belal, and Trevor P. Newson  »View Author Affiliations


Optics Letters, Vol. 38, Issue 17, pp. 3312-3315 (2013)
http://dx.doi.org/10.1364/OL.38.003312


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Abstract

A Brillouin-based distributed optical fiber dynamic strain sensor is described which converts strain-induced Brillouin frequency shift into optical intensity variations by using an imbalanced Mach–Zhender interferometer. A 3×3 coupler is used at the output of this interferometer to permit differentiate and cross multiply demodulation. The demonstrated sensor is capable of probing dynamic strain disturbances over 2 km of sensing length every 0.5 s up to a strain of 10 mε with an accuracy of ±50με and spatial resolution of 1.3 m.

© 2013 Optical Society of America

OCIS Codes
(060.2310) Fiber optics and optical communications : Fiber optics
(060.2370) Fiber optics and optical communications : Fiber optics sensors
(290.5870) Scattering : Scattering, Rayleigh

ToC Category:
Fiber Optics and Optical Communications

History
Original Manuscript: June 24, 2013
Revised Manuscript: July 31, 2013
Manuscript Accepted: August 1, 2013
Published: August 22, 2013

Citation
Ali Masoudi, Mohammad Belal, and Trevor P. Newson, "Distributed dynamic large strain optical fiber sensor based on the detection of spontaneous Brillouin scattering," Opt. Lett. 38, 3312-3315 (2013)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-38-17-3312


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