Decreased h2 sensitivity in optical fiber

Details Decreased h2 sensitivity in optical fiber Decreased h2 sensitivity in optical fiber

C - Chemistry, Metallurgy

03

B

C03B 37/014 (2006.01) C03C 13/04 (2006.01) G02B 6/036 (2006.01) G02B 6/44 (2006.01)

Patent

CA 2295490

Disclosed is a method of making a hydrogen resistant optical waveguide fiber. The soot preform is heated and immersed in a metal halide gas. A reduced metal species is thus incorporated into the glass soot prior to sintering or consolidation of the soot preform. A hydrogen absorption band around 1530 nm is substantially eliminated from waveguides made from a precursor gas treated preform.

L'invention porte sur un procédé d'obtention d'une fibre de guide d'onde optique résistant à l'hydrogène. La préforme de suie est chauffée puis plongée dans un halogénure métallique gazeux. On incorpore ainsi dans la suie avant le frittage ou la consolidation de la préforme une espèce métallique réduite, et on élimine ainsi pratiquement la bande d'absorption de l'hydrogène voisine de 1530 nm dans les guides d'ondes produits à partir de préformes traitées par un gaz précurseur.

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