Apparatus and method for making optical filament preform

Details Apparatus and method for making optical filament preform Apparatus and method for making optical filament preform

1978-11-27

1980-11-11

Lindsay, Jr., Robert L.

Glass manufacturing

Processes

Forming product or preform from molten glass

65 12, 65 60D, 350 9630, 350 9631, C03C 702

Patent

active

042330459

ABSTRACT:
A glass optical waveguide filament preform is prepared by chemical reaction of vapor ingredients within a glass bait tube. A reactant feed tube extends into one end of the bait tube and terminates just short of the hot zone where reaction occurs. The end of the feed tube traverses the bait tube along with the burner which generates the hot zone. Reactants flow radially from slots in the end of the wall of the feed tube and combine with a flushing gas to form a mixture which flows in a spiral path through the hot zone.

REFERENCES:
patent: 4117802 (1978-10-01), Le Sergeant et al.
patent: 4155733 (1979-05-01), Sandbank
patent: 4162908 (1979-07-01), Rau et al.

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