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Hydrogen-induced hydroxyl profiles in doped silica layers

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Abstract

For several years, hydrogen interaction with silica optical fibers has been studied because of the detrimental effect on the transmission behavior of the lightguides. Generally, this interaction is connected with the development of hydroxyl groups,1 the nature and magnitude of which depend on the kind of the dopants. The hydrogen influence comprises both transport phenomena and chemical reactions with the glass network. Therefore, a deeper insight into the interaction mechanism can be obtained by determining the spatial profile of the hydroxyl concentration.

© 1995 Optical Society of America

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