Method of making optical fiber preform

Details Method of making optical fiber preform Method of making optical fiber preform

1982-08-02

1985-03-26

Smith, William F.

Glass manufacturing

Processes

Forming product or preform from molten glass

65 182, C03B 3701

Patent

active

045071357

ABSTRACT:
Various CVD processes are known whereby glass particles are flowed toward or over a substrate on which they are to be deposited. Because the substrate is cooler than the stream in which the particles are flowing, the thermophoretic force directs the particles toward the substrate. In accordance with the invention a beam of laser light is propagated over the surface in the vicinity of the stream of particles. The particles and/or a component within the stream absorbs the laser energy to induce within the stream of particles a temperature gradient whereby temperature increases with increased distance from the substrate surface.

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patent: 4328017 (1982-05-01), Buehl
patent: 4328018 (1982-05-01), Siegfried
patent: 4331462 (1982-05-01), Fleming, Jr. et al.
patent: 4378985 (1983-04-01), Powers

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