Surface treatments for optical fibre preforms

Details Surface treatments for optical fibre preforms Surface treatments for optical fibre preforms

1988-01-04

1989-09-05

Sikes, William L.

G02B 600

Patent

active

048632376

ABSTRACT:
Halide fibers are protected by coatings up to 2.mu.m thick of chalcogenide glasses, e.g. glasses based on compounds of S, Se or Te with Ge or As. The coatings are deposited on the fiber preform by ion deposition sputtering. Preferably the preform is etched by directing a stream of inert ions at it. Most suitably the etching immediately precedes the coating.

REFERENCES:
patent: 4381141 (1983-04-01), Sakuragi et al.
patent: 4733940 (1988-03-01), Broer et al.
patent: 4737012 (1988-04-01), Murakami et al.
Chemical Abstracts, vol. 95, No. 16, Oct. 1981, p. 278,
Abstract 137155k (Furukawa Electric) Chemical Abstracts, vol. 99, No. 20, Nov. 1983, p. 272, Abstract No. 162918b (Nippon Telegraph & Telephone Public Corp.).
Proceedings, Third International Symposium on Halide Glasses, Jun. 24-28, 1985, Nakata et al., "Halide Glass Fibers with a Protective Chalcogenide Glass Jacket".
Chemical Abstracts, vol. 99, No. 20, Nov. 14, 1983, p. 272, Abstract 162918b, Columbus, Ohio, U.S.: & JP-A-58 95 265 (Nippon Telegraph and Telephone Public Corp.).
Chemical Abstract, vol 95, No. 16, Oct. 1981, p. 278, Abstract 137155k, Columbus, Ohio, U.S.; & JP-A-81 50 307 (Furukawa Electric).

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