Optical fiber
AssigneeSumitomo Electric Industries, Ltd.
InventorsNoriaki Iwaguchi, Masuo Iida, Takashi Fujii
Life of this patent
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Abstract
An optical fiber includes a glass fiber and a coating resin layer with which the glass fiber is covered, wherein the coating resin layer includes tin and a cured ultraviolet curable resin composition containing 2,4,6-trimethylbenzoyldiphenyl phosphine as a photoinitiator, a percentage of uncured components having a molecular weight of 1000 or less included in the coating resin layer is 15% by mass or less, and a fraction of an amount of a phosphorus-tin complex with respect to an amount of hydrocarbon on the surface of coating resin layer is 1000 ppm or less.
Claims9
An optical fiber comprising:
- a glass fiber and a coating resin layer with which the glass fiber is covered, wherein the coating resin layer has a primary resin layer and a secondary resin layer, the primary resin layer includes a cured ultraviolet curable resin composition containing 2,4,6-trimethylbenzoyldiphenyl phosphine as a photoinitiator, and
- the secondary resin layer includes tin and a cured ultraviolet curable resin composition containing 2,4,6-trimethylbenzoyldiphenyl phosphine as a photoinitiator,
- the content of 2,4,6-trimethylbenzoyldiphenyl phosphine is 0.5 to 2.0% by mass in the coating resin layer,
- a percentage of uncured components having a molecular weight of 1000 or less included in the coating resin layer is 15% by mass or less, and
- a fraction of an amount of a phosphorus-tin complex with respect to an amount of hydrocarbon on a surface of the coating resin layer is 1000 ppm or less, and
- a cured ultraviolet curable resin composition containing 25 to 45% by mass of a polyfunctional monomer having a bisphenol skeleton.
Dependencies are inferred from the claim text.