Method for producing glass preform for optical fiber

Details Method for producing glass preform for optical fiber Method for producing glass preform for optical fiber

1991-07-08

1992-10-27

Jones, W. Gary

Glass manufacturing

Processes

Forming product or preform from molten glass

65DIG16, 65 314, 65 182, 65 301, C03C 2502

Patent

active

051585871

ABSTRACT:
A method for producing a glass preform for use in the fabrication of an optical fiber, which includes the steps of forming a glass soot preform from a glass-forming raw material and heating the soot preform in an atmosphere containing SiF.sub.4 under a pressure higher than 2 atm. for a period of time sufficient to add fluorine during the time between the formation of the soot preform and the vitrification of it, fluorine is added at a high rate and in a larger amount.

REFERENCES:
patent: 4579571 (1986-04-01), Hicks
patent: 4586943 (1986-05-01), Kyoto et al.
patent: 4629485 (1986-12-01), Barkey

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