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Journal of the Optical Society of America A

Journal of the Optical Society of America A

| OPTICS, IMAGE SCIENCE, AND VISION

  • Vol. 21, Iss. 4 — Apr. 1, 2004
  • pp: 552–560

Inverse scattering algorithm for reconstructing lossy fiber Bragg gratings

Amir Rosenthal and Moshe Horowitz  »View Author Affiliations


JOSA A, Vol. 21, Issue 4, pp. 552-560 (2004)
http://dx.doi.org/10.1364/JOSAA.21.000552


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Abstract

We demonstrate an inverse scattering algorithm for reconstructing the structure of lossy fiber Bragg gratings. The algorithm enables us to extract the profiles of the refractive index and the loss coefficient along the grating from the grating transmission spectrum and from the reflection spectra, measured from both sides of the grating. Such an algorithm can be used to develop novel distributed evanescent-wave fiber Bragg sensors that measure the change in both the refractive index and the attenuation coefficient of the medium surrounding the grating. The algorithm can also be used to analyze and to design fiber Bragg gratings written in fiber amplifiers. A novel method to overcome instability problems in extracting the parameters of the lossy grating is introduced. The new method also makes it possible to reduce the spectral resolution needed to accurately extract the grating parameters.

© 2004 Optical Society of America

OCIS Codes
(050.2770) Diffraction and gratings : Gratings
(060.2370) Fiber optics and optical communications : Fiber optics sensors

History
Original Manuscript: July 10, 2003
Revised Manuscript: December 4, 2003
Manuscript Accepted: December 5, 2003
Published: April 1, 2004

Citation
Amir Rosenthal and Moshe Horowitz, "Inverse scattering algorithm for reconstructing lossy fiber Bragg gratings," J. Opt. Soc. Am. A 21, 552-560 (2004)
http://www.opticsinfobase.org/josaa/abstract.cfm?URI=josaa-21-4-552


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