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US 12,030,808 B2Granted
Method for manufacturing an optical fiber
AssigneeFujikura Ltd.
InventorsKenji Yamashiro, Miryo Kashiwazaki
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Abstract
A method for manufacturing an optical fiber, the method includes: exposing a bare fiber formed of glass and having a temperature of 500° C. to 1,500° C. to a gas in which a moisture content is controlled to 2 to 20 g/m3; applying an uncured resin to an outer periphery of the bare fiber; and curing the resin to form a coating layer.
Claims8
A method for manufacturing an optical fiber, the method comprising:
- exposing a bare fiber having a temperature of 500° C. to 1,500° C. to a gas in which a moisture content is controlled to 2 to 20 g/m3, wherein the bare fiber is formed of glass;
- applying an uncured resin to an outer periphery of the bare fiber;
- and
- curing the resin to form a coating layer, wherein
- any one of Expression (3), (4), or (5) is satisfied:
- 3≤W≤5 and 0.3≤T≤0.4 (3);
- 4≤W≤15 and 0.1≤T≤0.3 (4);
- 10≤W≤15 and 0.05≤T≤0.3 (5),
- where
- W (g/m3) is the moisture content of the gas, and
- T (sec) is a time for exposing the bare fiber to the gas.
8 more elements
A method for manufacturing an optical fiber, the method comprising:
- exposing a bare fiber having a temperature of 500° C. to 1,500° C. to a gas in which a moisture content is controlled to 2 to 20 g/m3, wherein the bare fiber is formed of glass;
- applying an uncured resin to an outer periphery of the bare fiber;
- and
- curing the resin to form a coating layer, wherein
- Expression (6) or (7) is satisfied:
- 10≤W≤15 and 0.1≤T≤0.3 (6);
- 4≤W≤5 and 0.3≤T≤0.4 (7),
- where
- W (g/m3) is the moisture content of the gas, and
- T (sec) is a time for exposing the bare fiber to the gas.
7 more elements
Dependencies are inferred from the claim text.