Method of manufacturing an optical fiber using a preform obtaine

Details Method of manufacturing an optical fiber using a preform obtaine Method of manufacturing an optical fiber using a preform obtaine

1988-09-29

1989-09-26

Lindsay, Robert L.

Glass manufacturing

Processes

Forming product or preform from molten glass

65 312, 65 13, C03B 37027

Patent

active

048697435

ABSTRACT:
In order to manufacture a fiber by drawing a preform, said preform is made by collapsing a thick-walled silica tube having a reduced pressure established therein and heated in successive passes. The tube is prevented from ovalizing by beginning each pass with a portion bearing against a coaxial internal conical guide. The invention is applicable to low cost fiber manufacture.

REFERENCES:
patent: 4283213 (1981-08-01), Akers et al.
patent: 4286978 (1981-09-01), Bailey et al.
patent: 4326869 (1982-04-01), Kurosaki et al.
patent: 4372767 (1983-02-01), Maklad
patent: 4505729 (1985-03-01), Matsumura et al.
patent: 4578096 (1986-03-01), Siegmund
patent: 4764194 (1988-08-01), Maklad
patent: 4812154 (1989-03-01), Yoshida

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