Technique for fabricating single mode lightguide soot-forms

Details Technique for fabricating single mode lightguide soot-forms Technique for fabricating single mode lightguide soot-forms

1983-05-31

1984-08-14

Newsome, John H.

Coating processes

Optical element produced

Polarizer, windshield, optical fiber, projection screen, or...

427423, 65 312, B05D 108

Patent

active

044657080

ABSTRACT:
A torch (24) used in the Vapor-phase Axial Deposition (VAD) process to form small diameter cores for single mode lightguide preforms. The torch (24) is comprised of a plurality of concentrically mounted, spaced, glass tubes (62, 63, 64, 65, 66) through which reactants and combustible materials are passed. A tapered shroud (68) is mounted about the end of the torch (24) and a shield gas directed along the inner surface thereof to confine and direct the gases and reactants to the surface of the soot form (12).

REFERENCES:
patent: 4062665 (1977-12-01), Izawa et al.
patent: 4345928 (1982-08-01), Kawachi et al.
patent: 4368063 (1983-01-01), Presby
Imoto et al., "Modified VAD Method for Optical-Fibre Fabrication" Electronic Letters, vol. 17, No. 15, pp. 525-526, Jul. 23, 1981.

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