Outside vapor deposition apparatus for making optical fiber preform
AssigneeLS Cable Ltd.
InventorsChan-Yong Park, Bong-Hoon Lee
Life of this patent
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Abstract
An Outside Vapor Deposition (OVD) apparatus for making an optical fiber preform with uniform deposition of silica particles through uniform heating to the overall length of the preform includes a mandrel having a predetermined length and driven to rotate and a burner for emitting a combustion gas together with a combustion gas toward the mandrel and burning the combustion gas to make silica particles to that the silica particles are deposited on a surface of the mandrel, wherein the burner has a length corresponding to the length of the mandrel and provides uniform temperature throughout the overall length of the mandrel at the same time.
Claims6
An Outside Vapor Deposition (OVD) apparatus for making an optical fiber preform comprising:
- a mandrel having a predetermined length and capable of rotating;
- and
- a burner for emitting predetermined reaction gas together with combustion gas toward the mandrel to generate material particles of an optical fiber preform so that the material particles are deposited on a surface of the mandrel to form the optical fiber preform,
- wherein the burner has a length substantially equal to the mandrel, has an array of gas spreading channels successively connected to each other along the direction of the mandrel's central axis, and provides uniform temperature throughout the overall length of the mandrel at the same time,
- wherein a section of each channel becomes wider in the direction of the mandrel's central axis from a gas input portion to a gas output end portion, and
- wherein each gas spreading channel respectively emits the combustion gas together with the reaction gas.
Dependencies are inferred from the claim text.