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Proceedings Paper

Photoinduced refractive index subgratings in germanosilicate optical fibers
Author(s): Eugeni M. Dianov; Vladimir B. Neustruev
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Paper Abstract

A new approach assuming nonadditive action of different mechanisms of the photorefractive effect is proposed to explain the features of fiber Bragg gratings (FBG) in germanosilicate fibers. By taking properly into account the properties of Ge-related defects, the causes of some discrepancies among the previous inferences about FBG are analyzed. The known mechanisms of the photorefractive effect are discussed from the point of view of superposition of subgratings, created by them. The published facts pointing to significant contribution of spatially periodic charge grating to (Delta) n are reviewed. To explain this contribution, an electrostriction mechanism is proposed. The results on FBG writing by laser radiation in the wavelength range 333 - 364 nm and new relevant data on the nature of germanium oxygen-deficient centers are discussed.

Paper Details

Date Published: 17 May 2000
PDF: 12 pages
Proc. SPIE 4083, Advances in Fiber Optics, (17 May 2000); doi: 10.1117/12.385640
Show Author Affiliations
Eugeni M. Dianov, General Physics Institute (Russia)
Vladimir B. Neustruev, General Physics Institute (Russia)

Published in SPIE Proceedings Vol. 4083:
Advances in Fiber Optics
Eugeni M. Dianov, Editor(s)

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