Method and apparatus for forming an optical waveguide preform ha

Details Method and apparatus for forming an optical waveguide preform ha Method and apparatus for forming an optical waveguide preform ha

1980-06-02

1982-01-12

Fisher, Richard V.

Glass manufacturing

Processes

Forming product or preform from molten glass

65144, 65 182, 118729, 118730, 264 15, 264 27, 425224, 427163, C03B 37025, C03B 37075

Patent

active

043103391

ABSTRACT:
A substantially continuous method of and apparatus for forming an article suitable for an optical waveguide preform wherein the starting member is continuously removed is disclosed. The preform is formed by providing a starting member or bait and applying the particulate material to the exterior surface of the starting member to form a coating thereon. The coating is longitudinally translated while simultaneously additional particulate material is applied to the coating to form a preform body with the preform body thereafter being longitudinally translated. While longitudinally translating the preform body and applying additional particulate material to the end thereof, the starting member is continuously removed from the preform body leaving a longitudinal aperture remaining in the preform body. The particulate material may be applied by one or more burners, the output of which may be controlled to provide a predetermined desired cross sectional composition variation of the resulting preform body. The so formed preformed body may thereafter be suitably heated, consolidated, and drawn into an optical waveguide.

REFERENCES:
patent: Re28029 (1974-06-01), Keck et al.
patent: 3652248 (1972-03-01), Loxley et al.
patent: 3933454 (1976-01-01), DeLuca
patent: 4062665 (1977-12-01), Izawa et al.
patent: 4102663 (1978-07-01), Jung
patent: 4198223 (1980-04-01), Goell et al.
patent: 4224046 (1980-09-01), Izawa et al.
patent: 4230472 (1980-10-01), Schultz

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