OH reduction in preforms by isotope exchange

15 October 1981

journal article
Published by Institution of Engineering and Technology (IET) in Electronics Letters

Vol. 17 (21) , 815-817
https://doi.org/10.1049/el:19810569

Abstract

To reduce OH-ion content in MCVD preforms a method, based on a thermal-activated deuterium-hydrogen isotope exchange, has been developed. Reaction has been applied on the internal walls of silica substrate tubes to produce a buffering layer against hydrogen diffusion. Experimental results are presented and process potentialities are discussed.

Keywords

HYDROGEN DIFFUSION
THERMAL ACTIVATED D-H ISOTOPE EXCHANGE
MODIFIED CHEMICAL VAPOUR DEPOSITION PREFORMS
SILICA SUBSTRATE TUBES
OPTICAL FIBRES
OH REDUCTION

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