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US 11,306,018 B2Granted
Optical fiber manufacturing method
AssigneeFujikura Ltd.
InventorItaru Ishida
Life of this patent
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Abstract
An optical fiber manufacturing method includes: drawing an optical fiber preform to form a bare optical fiber; cooling the bare optical fiber by a non-contact direction changer; adjusting a temperature of the bare optical fiber in a temperature adjusting unit disposed downstream of the non-contact direction changer and upstream of a coating unit; disposing, in the coating unit, an uncured coating layer that comprises a resin precursor on an outer periphery of the bare optical fiber; and curing the uncured coating layer in a curing unit.
Claims10
An optical fiber manufacturing method comprising:
- drawing an optical fiber preform to form a bare optical fiber;
- cooling the bare optical fiber by a non-contact direction changer;
- adjusting a temperature of the bare optical fiber without using any non-contact direction changers in a temperature adjusting unit disposed downstream of and below the non-contact direction changer and upstream of a coating unit;
- disposing, in the coating unit, an uncured coating layer that comprises a resin precursor on an outer periphery of the bare optical fiber the temperature of which is adjusted in the temperature adjusting unit;
- and
- curing the uncured coating layer in a curing unit.
3 more elements
Dependencies are inferred from the claim text.