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Optics Letters

| RAPID, SHORT PUBLICATIONS ON THE LATEST IN OPTICAL DISCOVERIES

  • Vol. 25, Iss. 10 — May. 15, 2000
  • pp: 698–700

Reconstructing arbitrary strain distributions within fiber gratings by time–frequency signal analysis

José Azaña and Miguel A. Muriel  »View Author Affiliations


Optics Letters, Vol. 25, Issue 10, pp. 698-700 (2000)
http://dx.doi.org/10.1364/OL.25.000698


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Abstract

We apply time–frequency signal-analysis techniques to recover arbitrary distributions of axial strain along a fiber grating from its reflection spectral response. The proposed method permits accurate strain reconstruction with no restrictions on the applied strain profile or on the grating length. We demonstrate the validity and accuracy of the technique by reconstructing the strain field in a fiber grating with a nonmonotonic strain profile, which includes all the following: a constant strain section, high gradient variations, and strain discontinuities.

© 2000 Optical Society of America

OCIS Codes
(060.2340) Fiber optics and optical communications : Fiber optics components
(060.2370) Fiber optics and optical communications : Fiber optics sensors
(070.6020) Fourier optics and signal processing : Continuous optical signal processing

Citation
José Azaña and Miguel A. Muriel, "Reconstructing arbitrary strain distributions within fiber gratings by time–frequency signal analysis," Opt. Lett. 25, 698-700 (2000)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-25-10-698

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