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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Vol. 39, Iss. 12 — Apr. 20, 2000
  • pp: 1924–1933

Comparison of isochronal and isothermal decays of Bragg gratings written through continuous-wave exposure of an unloaded germanosilicate fiber

Dominique Razafimahatratra, Pierre Niay, Marc Douay, Bertrand Poumellec, and Isabelle Riant  »View Author Affiliations


Applied Optics, Vol. 39, Issue 12, pp. 1924-1933 (2000)
http://dx.doi.org/10.1364/AO.39.001924


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Abstract

We compare the results of thermally induced isochronal and isothermal decays of fiber Bragg gratings written through cw exposure of an unloaded germanosilicate fiber. We show that isochronal step decays can be used to predict isothermal decays, provided that some corrections are carried out to take into account a reversible change in grating reflectivity induced by the increase of the fiber temperature. The isochronal accelerated-aging method enables one to sample most of the initial distribution of trapped site energies in a fairly short time. Taking advantage of this property of the method, we show that the initial distribution for a weak grating is similar to those for stronger gratings. The consequences of this observation are discussed within the framework of the various reaction pathway model.

© 2000 Optical Society of America

OCIS Codes
(060.2340) Fiber optics and optical communications : Fiber optics components
(140.6810) Lasers and laser optics : Thermal effects
(350.2770) Other areas of optics : Gratings

History
Original Manuscript: May 4, 1999
Revised Manuscript: October 6, 1999
Published: April 20, 2000

Citation
Dominique Razafimahatratra, Pierre Niay, Marc Douay, Bertrand Poumellec, and Isabelle Riant, "Comparison of isochronal and isothermal decays of Bragg gratings written through continuous-wave exposure of an unloaded germanosilicate fiber," Appl. Opt. 39, 1924-1933 (2000)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-39-12-1924

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