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US 11,960,115 B2Granted
Optical fiber
AssigneeSumitomo Electric Industries, Ltd.
InventorsKatsushi Hamakubo, Kazuyuki Sohma, Tatsuya Konishi
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Abstract
An optical fiber comprises a glass fiber comprising a core and a cladding, and a coating resin layer covering the outer periphery of the glass fiber, wherein the average linear expansion coefficient of the coating resin layer at −50° C. or more and 0° C. or less is 3.3×10−5/° C. or more and less than 9.0×10−5/° C.
Claims13
An optical fiber comprising:
- a glass fiber comprising a core and a cladding;
- and
- a coating resin layer covering the outer periphery of the glass fiber,
- wherein an average linear expansion coefficient of the coating resin layer at −50° C. or more and 0° C. or less is 3.3×10−5/° C. or more and less than 9.0×10−5/° C.,
- wherein the coating resin layer has a primary resin layer being in contact with the glass fiber and covering the glass fiber and a secondary resin layer covering an outer periphery of the primary resin layer,
- the secondary resin layer comprises a cured product of a resin composition comprising a base resin containing an oligomer comprising urethane (meth)acrylate, a monomer, and a photopolymerization initiator, and hydrophobic inorganic oxide particles, and
- wherein a content of the inorganic oxide particles is 3% by mass or more and less than 65% by mass based on a total amount of the resin composition.
4 more elements
Dependencies are inferred from the claim text.