Apparatus for fabricating optical fiber preform

Details Apparatus for fabricating optical fiber preform Apparatus for fabricating optical fiber preform

1986-06-06

1989-03-21

Schor, Kenneth M.

Glass manufacturing

Processes

Forming product or preform from molten glass

65 312, 65144, 65160, 65161, C03B 37018, C03B 3707

Patent

active

048139890

ABSTRACT:
An apparatus for fabricating an optical fiber preform having a support for rotatably holding a reaction tube, a raw material supply unit for supplying a glass raw material from one end of the reaction tube to the interior of the reaction tube and a heater for heating the reaction tube by reciprocating in the axial direction of the reaction tube which comprises a pressure measuring unit at the other end of the reaction tube, a gas pressure control chamber having a gas inlet and an exhaust port, and a blower capable of controlling the introduced gas pressure according to the measured value of the pressure memasuring unit in the gas inlet. Thus, the apparatus can accurately control the internal pressure of a reaction tube in good responsiveness.

REFERENCES:
patent: 4280829 (1981-07-01), Sheth
patent: 4385915 (1983-05-01), Amelse et al.
patent: 4389229 (1983-06-01), Jang et al.
patent: 4578253 (1986-03-01), Gill et al.
W. L. McCabe et al., "Unit Operations of Chemical Engineering", Fourth Edition, pp. 183-191.

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