Optical waveguide manufacture

Details Optical waveguide manufacture Optical waveguide manufacture

1987-03-30

1988-03-29

Schor, Kenneth M.

Glass manufacturing

Processes

Forming product or preform from molten glass

65 182, 65DIG16, C03P 37018

Patent

active

047341173

ABSTRACT:
Optical waveguide having a fused silica core and a fluorine doped fused silica cladding is made by depositing particulate core silica onto a support tube and then drying and densifying the silica. Further particulate cladding silica is deposited and is heated in a fluorine containing gas to effect drying, fluorine diffusion into and sintering the cladding silica. The support tube is etched away and the resulting tubular preform is heated to collapse it into a rod from which waveguide is drawn, the waveguide having a fluorine doped silica cladding.

REFERENCES:
patent: 3868170 (1975-02-01), De Luca
patent: 3933454 (1976-01-01), De Luca
patent: 4402720 (1983-09-01), Edahiro
patent: 4493721 (1985-01-01), Auwerda
patent: 4557561 (1985-12-01), Schneider

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