Apparatus for producing an optical fiber preform

Details Apparatus for producing an optical fiber preform Apparatus for producing an optical fiber preform

1985-10-25

1987-12-22

Bashore, S. Leon

Glass manufacturing

Processes

With shaping of particulate material and subsequent fusing...

65144, 65163, C03B 2304, C03B 3702, C03B 1906

Patent

active

047144882

ABSTRACT:
A porous glass optical waveguide preform is formed by depositing a coating of glass particulate material on the lateral surface of a core which may be a porous glass body continuously produced by the axial deposition of glass particles. The core rotates and moves longitudinally in one direction with respect to two flame hydrolysis burners which emit streams of glass particles having different compositions. In addition, the two burners reciprocatingly move with respect to a portion of the length of the core. The speed of each burner varies as it traverses along its path of reciprocating motion. The thickness of the layer produced by a burner at a given point is inversely related to the speed of the burner as it passes that point. The layers formed by the completion of a single traverse by both burners combine to form a conically-shaped layer, the composition of which varies from the base toward the apex thereof. The conically-shaped layer, which are adjacently located longitudinally along the preform, combine to form a cylindrically-shaped portion of the preform.

REFERENCES:
patent: 4289517 (1981-09-01), Bailey et al.
patent: 4367013 (1983-01-01), Guerer et al.
patent: 4367085 (1983-01-01), Suto et al.
patent: 4378985 (1983-04-01), Powers
patent: 4388094 (1983-06-01), Carpenter et al.
patent: 4428762 (1984-01-01), Andrejco et al.

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