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AssigneeSumitomo Electric Industries, Ltd.
InventorsIwao OKAZAKI, Kazuyuki SOHMA, Takahiro NOMURA
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Provided is a method for manufacturing an optical fiber that includes a glass fiber, a primary resin layer, and a secondary resin layer. When a lateral rigidity of the optical fiber as shown in Formula (1) is set as D [N/m2], and a bending rigidity of the optical fiber as shown in Formula (2) is set as H [N·m2] with respect to the optical fiber, Formula (3) is satisfied. D = { c 1 ( 1 - R 0 R 2 ) c 2 + c 3 } { ( E 2 - E 1 ) 10 ∑ i , j , k c ijk ( log 10 R 2 - R 1 R 2 - R 0 ) i ( log 10 E 1 E 2 ) j ( log 10 R 0 R 2 ) k + E 1 } ( 1 ) H ∝ π R 0 4 E 0 + π ( R 2 4 - R 1 4 ) E 2 ( 2 ) 0.3 ≥ D / H 2 D 0 / H 0 2 ( α 2 - α 1 ) + α 1 ( 3 )
A method for manufacturing an optical fiber that includes a glass fiber with a diameter of 125 μm or less, a primary resin layer that surrounds the glass fiber, and a secondary resin layer that surrounds the primary resin layer and has a diameter of from 150 μm to 210 μm, and is used in an optical cable,
An optical fiber that includes a glass fiber with a diameter of 125 μm or less, a primary resin layer that surrounds the glass fiber, and a secondary resin layer that surrounds the primary resin layer and has a diameter of from 150 μm to 210 μm, and is used in an optical cable,
Dependencies are inferred from the claim text.