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Optics Letters

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  • Editor: Alan E. Willner
  • Vol. 38, Iss. 13 — Jul. 1, 2013
  • pp: 2327–2329

Recovering a fiber Bragg grating axial strain distribution from its reflection spectrum

L. Rodriguez-Cobo, A. Cobo, and J. M. Lopez-Higuera  »View Author Affiliations


Optics Letters, Vol. 38, Issue 13, pp. 2327-2329 (2013)
http://dx.doi.org/10.1364/OL.38.002327


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Abstract

A processing scheme able to obtain any arbitrary intragrating strain distribution of a fiber Bragg grating (FBG) is proposed and demonstrated. The processing method employs just the intensity of the FBG reflection spectrum to obtain its deformation profile by combining a geometrical processing scheme with the particle swarm optimization technique. The technique has been evaluated using several spectra generated from very heterogeneous strain distributions and with a real spectrum obtained from a 5 mm length FBG under an asymmetric perturbation. The achieved results exhibit a good spatial resolution (Δ0.5mm) and repeatability.

© 2013 Optical Society of America

OCIS Codes
(060.3735) Fiber optics and optical communications : Fiber Bragg gratings
(280.4788) Remote sensing and sensors : Optical sensing and sensors

ToC Category:
Fourier Optics and Signal Processing

History
Original Manuscript: March 25, 2013
Revised Manuscript: May 6, 2013
Manuscript Accepted: May 27, 2013
Published: June 26, 2013

Citation
L. Rodriguez-Cobo, A. Cobo, and J. M. Lopez-Higuera, "Recovering a fiber Bragg grating axial strain distribution from its reflection spectrum," Opt. Lett. 38, 2327-2329 (2013)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-38-13-2327


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References

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