Method of and apparatus for manufacturing optical fibres
AssigneeU.S. Philips Corporation
InventorsMarius A. F. Klop, Wilhelmus C. P. M. Meerman, Jan G. J. Peelen, Hermanus N. Tuin
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Abstract
Method of and apparatus for manufacturing optical fibers in which a preform is heated in a furnace which is provided with a graphite heating element and a fiber is drawn from the heated preform. The fiber is subsequently cooled, provided with a coating, and, after drying of the coating, the fiber is wound onto a reel. During drawing of the fiber, the preform and fiber are flushed with a gas. According to the invention the gas with which the fiber is flushed is passed along a condensation element.
Claims7
A method of manufacturing fibers comprising the steps of:
- heating an end of a preform in a furnace until the end of the preform becomes melted;
- drawing a fiber from the melted end of the preform;
- flushing the melted end of the preform and the fiber with an inert gas;
- and
- withdrawing the fiber from the furnace;
- CHARACTERIZED IN THAT there is also performed the step of condensing contaminants and gaseous reaction products from the inert gas along a condensation element which surrounds the fiber, substantially all condensed contaminants and gaseous reaction products condensing and settling on the condensation element.
An apparatus for manufacturing fibers comprising:
- means for holding and feeding a preform;
- means for heating the preform received from the holding and feeding means, said heating means having an exit opening surrounding the fiber;
- and
- means for drawing a fiber from the heated preform;
- CHARACTERIZED IN THAT the apparatus further comprises means for condensing contaminants and gaseous reaction products, said means being arranged in the exit opening of the heating means, substantially all condensed contaminants and gaseous reaction products condensing and settling on said means.
Dependencies are inferred from the claim text.