Method of making compound-glass optical waveguides fabricated by

Details Method of making compound-glass optical waveguides fabricated by Method of making compound-glass optical waveguides fabricated by

1975-09-12

1976-07-27

Lindsay, Jr., Robert L.

Glass manufacturing

Processes

Forming product or preform from molten glass

65 13, 65 60C, 65DIG7, 427167, C03C 1708, G02B 514

Patent

active

039716457

ABSTRACT:
Glass fiber optical-waveguides consisting of a metal oxide-silicate glass core and silica cladding are produced according to the invention by means of a metal evaporation technique. An evacuated fused silica tube containing an evaporated metal deposit is heated to temperatures sufficient to form a uniform metal silicide layer on its inner surface. This layer is then oxidized and reacted with the silica tubing at elevated temperatures to form a metal oxide-silica glass layer. The tube is then collapsed to give a solid rod preform with a metal oxide-silica glass core. Fibers drawn from such preforms exhibit a graded refractive index profile and low loss. The details of the fabrication technique are described, and a representative loss spectrum is presented.

REFERENCES:
patent: 3659915 (1972-05-01), Maurer
patent: 3711262 (1973-01-01), Keck et al.
patent: 3806224 (1974-04-01), MacChesney
patent: 3900305 (1975-08-01), DeLuca

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