Wire-drawing optical fiber base material manufacturing method and manufacturing apparatus
AssigneeShin-Etsu Chemical Co., Ltd.
InventorTetsuya OTOSAKA
Life of this patent
Estimating the term…
Abstract
A wire-drawing optical fiber base material manufacturing method of heating an optical fiber base material by a heater and forming a drawing shape portion at an end portion. The manufacturing method includes: forming, by a flow-regulating member disposed adjacent to the heater, a gas flow such that formation, along a surface of the optical fiber base material, of a flow of a gas containing a Si compound generated from the optical fiber base material heated by the heater is inhibited; and forming, while maintaining the gas flow, the drawing shape portion by pulling part of the optical fiber base material softened by being heated by the heater.
Claims20
A wire-drawing optical fiber base material manufacturing method of heating an optical fiber base material by a heater and forming a drawing shape portion at an end portion, the manufacturing method comprising:
- forming, by a flow-regulating member disposed adjacent to the heater, a gas flow such that formation, along a surface of the optical fiber base material, of a flow of a gas containing a Si compound generated from the optical fiber base material heated by the heater is inhibited;
- and
- forming, while maintaining the gas flow, the drawing shape portion by pulling part of the optical fiber base material softened by being heated by the heater.
A manufacturing apparatus that manufactures a wire-drawing optical fiber base material, the manufacturing apparatus comprising:
- a heater that heats an optical fiber base material;
- a flow-regulating member that:
- is arranged adjacent to the heater;
- and forms a gas flow such that formation, along a surface of the optical fiber base material, of a flow of a gas containing a Si compound generated from the optical fiber base material heated by the heater is inhibited;
- and
- a pulling unit that pulls part of the optical fiber base material softened by being heated by the heater and forms a drawing shape portion at an end portion.
Dependencies are inferred from the claim text.