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Optics Letters

Optics Letters


  • Vol. 27, Iss. 22 — Nov. 15, 2002
  • pp: 1974–1976

Growth dynamics of chemical composition gratings in fluorine-doped silica optical fibers

Michael Fokine  »View Author Affiliations

Optics Letters, Vol. 27, Issue 22, pp. 1974-1976 (2002)

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The refractive-index modulation of chemical composition gratings in fluorine–germanium-doped silica fibers as a function of thermal treatment during manufacturing has been studied. The final grating strength was found to depend strongly on an intermediate annealing step, with an optimum temperature near 600–700 °C, before development at a fixed temperature of 1000 °C. Low–temperature treatment, aimed at removing any remaining hydrogen from the fiber, performed at 100 °C for 20 h before the annealing step, also significantly increased the final refractive-index modulation.

© 2002 Optical Society of America

OCIS Codes
(060.2310) Fiber optics and optical communications : Fiber optics
(060.2370) Fiber optics and optical communications : Fiber optics sensors
(230.1480) Optical devices : Bragg reflectors

Michael Fokine, "Growth dynamics of chemical composition gratings in fluorine-doped silica optical fibers," Opt. Lett. 27, 1974-1976 (2002)

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  1. M. Fokine, B. F. Sahlgren, and R. Stubbe, in Bragg Gratings, Photosensitivity, and Poling in Glass Fibers and Waveguides: Applications and Fundamentals, Vol. 7 of 1997 OSA Technical Digest Series (Optical Society of America, Washington, D.C., 1997), pp. 58–60.
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