Optical fiber
AssigneeSumitomo Electric Industries, Ltd.
InventorKatsushi Hamakubo
Life of this patent
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Abstract
An optical fiber comprises a glass fiber comprising a core and a cladding, a primary resin layer being in contact with the glass fiber and covering the glass fiber, and a secondary resin layer covering the primary resin layer, wherein the secondary resin layer consists of a cured product of a resin composition comprising a base resin containing a urethane (meth)acrylate oligomer, a monomer, and a photopolymerization initiator and hydrophobic inorganic oxide particles, the content of the inorganic oxide particles is 1% by mass or more and 60% by mass or less based on the total amount of the resin composition, and the glass transition temperature of the secondary resin layer is 60° C. or more and 120° C. or less.
Claims6
An optical fiber comprising a glass fiber comprising a core and a cladding;
- a primary resin layer being in contact with the glass fiber and covering the glass fiber;
- and a secondary resin layer covering the primary resin layer,
- wherein the secondary resin layer consists of a cured product of a resin composition comprising a base resin containing a urethane (meth)acrylate oligomer, a monomer, and a photopolymerization initiator;
- and hydrophobic inorganic oxide particles,
- wherein a content of the inorganic oxide particles consisting of silicon dioxide is 5% by mass or more and 60% by mass or less based on the total amount of the resin composition,
- a glass transition temperature of the secondary resin layer is 60° C. or more and 120° C. or less, and
- an average primary particle diameter of the inorganic oxide particles is 200 nm or less.
An optical fiber comprising:
- a glass fiber comprising a core and a cladding;
- a primary resin layer being in contact with the glass fiber and covering the glass fiber;
- and
- a secondary resin layer covering the primary resin layer,
- wherein the secondary resin layer comprises inorganic oxide particles and a content of the inorganic oxide particles consisting of silicon dioxide is 5% by mass or more and 60% by mass or less based on the total amount of the secondary resin layer,
- a glass transition temperature of the secondary resin layer is 60° C. or more and 120° C. or less, and
- an average primary particle diameter of the inorganic oxide particles is 200 nm or less.
Dependencies are inferred from the claim text.