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

1987-08-20

1988-08-23

Schor, Kenneth M.

Glass manufacturing

Processes

Forming product or preform from molten glass

65 32, 65 182, C03B 37018

Patent

active

047658150

ABSTRACT:
A method for producing a glass preform for an optical fiber by means at least two burners, comprising jetting a glass raw material containing SiCl.sub.4 from the first center burner and a hydrogen-containing silicon compound with larger reaction heat than SiCl.sub.4 from at least one second burner, flame hydrolyzing the glas raw material to synthesizing fine glass particles, depositing the fine glass particles on a starting member to form a porous soot preform and heating and sintering the soot preform to obtain a transparent glass preform, by which a large preform is stably produced and a bulk density of the preform is easily controlled.

REFERENCES:
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patent: 4062665 (1977-12-01), Izawa et al.
patent: 4135901 (1979-01-01), Fujiwara et al.
patent: 4224046 (1980-09-01), Izawa et al.
patent: 4310339 (1982-01-01), Plankenship
patent: 4378985 (1983-04-01), Powers
patent: 4552576 (1985-11-01), Hara et al.
patent: 4568370 (1986-02-01), Powers

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