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

1985-06-25

1987-04-07

Lindsay, Robert

Glass manufacturing

Processes

Forming product or preform from molten glass

65 13, 65 182, 65 32, C03C 2502, C03B 37075

Patent

active

046558080

ABSTRACT:
A method for producing a glass preform comprising flame hydrolyzing a glass raw material in an oxyhydrogen flame to form glass fine particles of quartz, depositing the glass fine particles on a seed member to produce a solid or hollow cylindrical soot preform at least of a part of which contains GeO.sub.2, and heating and sintering the soot preform by introducing it in an atmosphere comprising an inert gas at least a part of which is kept at a temperature not lower than 1,600.degree. C. at an introducing rate not smaller than 3 mm/min, from the glass preform produced by which method, an optical fiber having longitudinally homogeneous composition and low attenuation of light transmission is fabricated.

REFERENCES:
patent: 4304583 (1981-12-01), Aronson et al.
patent: 4367085 (1983-01-01), Suto et al.
patent: 4378985 (1983-04-01), Powers
patent: 4552576 (1985-11-01), Hara et al.

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