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Journal of the Optical Society of America B

Journal of the Optical Society of America B

| OPTICAL PHYSICS

  • Editor: Henry M. Van Driel
  • Vol. 24, Iss. 6 — Jun. 1, 2007
  • pp: 1262–1267

Detection of dynamic population gratings in erbium-doped optical fibers by means of transient fluorescence excited by oscillating interference pattern

Serguei Stepanov and Eliseo Hernández Hernández  »View Author Affiliations


JOSA B, Vol. 24, Issue 6, pp. 1262-1267 (2007)
http://dx.doi.org/10.1364/JOSAB.24.001262


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Abstract

We report a new, to the best of our knowledge, method for detection of dynamic population gratings in Er-doped fibers with saturable absorption that is based on observation of the transient fluorescence resulting from fast displacement of the recording interference pattern. The signal appears due to essentially different relaxation times of the fluorescence in bright and dark fringes of the light pattern. The experimental results obtained at the recording wavelength λ = 1492 nm in a single-mode fiber with 5600 ppm Er demonstrate good agreement with the theoretical model based on a saturable two-level system. Unlike conventional diffraction-based techniques, the proposed method results in the local grating amplitude value and can be used for characterization of the grating amplitude spatial profile. It can also be suitable for characterization of the grating formation processes in other bulk and thin-film media with saturable absorption.

© 2007 Optical Society of America

OCIS Codes
(060.2410) Fiber optics and optical communications : Fibers, erbium
(060.4370) Fiber optics and optical communications : Nonlinear optics, fibers
(300.2530) Spectroscopy : Fluorescence, laser-induced

ToC Category:
Fiber Optics and Optical Communications

History
Original Manuscript: December 5, 2006
Manuscript Accepted: January 11, 2007
Published: May 17, 2007

Citation
Serguei Stepanov and Eliseo Hernández Hernández, "Detection of dynamic population gratings in erbium-doped optical fibers by means of transient fluorescence excited by oscillating interference pattern," J. Opt. Soc. Am. B 24, 1262-1267 (2007)
http://www.opticsinfobase.org/josab/abstract.cfm?URI=josab-24-6-1262

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