Method of manufacturing optical fiber and optical-fiber-manufacturing apparatus
AssigneeSumitomo Electric Industries, Ltd.
InventorsTakahiro Nomura, Kazuyuki Sohma
Life of this patent
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Abstract
A method of manufacturing an optical fiber includes applying a curable resin composition containing a photopolymerization initiator so that an outer circumference of a glass fiber including a core and a cladding is coated, and forming a coating layer by radiating an ultraviolet ray to the curable resin composition and curing the curable resin composition. Forming the coating layer includes providing two or more non-radiation periods and intermittently radiating the ultraviolet ray three or more times so that a total time of the non-radiation periods is 0.010 seconds or more.
Claims4
A method of manufacturing an optical fiber, the method comprising:
- applying a curable resin composition containing a photopolymerization initiator so that an outer circumference of a glass fiber including a core and a cladding is coated;
- and
- forming a coating layer by radiating an ultraviolet ray to the curable resin composition and curing the curable resin composition,
- wherein forming the coating layer includes providing four or more non-radiation periods and intermittently radiating the ultraviolet ray five or more times so that a total time of the non-radiation periods is 0.026 seconds or more and 3 seconds or less.
Dependencies are inferred from the claim text.