Method of manufacturing optical fiber

• Main Authors: KURASEKO, HIROSHI, ORITA, NOBUAKI, UI, KEISUKE, NAKAJIMA, YASUO, KASAHARA, MINORU
• Format: Patent
• Language: English; French; German
• Published: 17.08.2011
• Subjects: AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING; CHEMICAL COMPOSITION OF GLASSES, GLAZES, OR VITREOUSENAMELS; CHEMISTRY; GLASS; JOINING GLASS TO GLASS OR OTHER MATERIALS; METALLURGY; MINERAL OR SLAG WOOL; PERFORMING OPERATIONS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDEDFOR; SHAPING OR JOINING OF PLASTICS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS,MINERALS OR SLAGS; SURFACE TREATMENT OF GLASS; TRANSPORTING; WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL

A method of manufacturing an optical fiber (3), comprises applying a UV cured resin to an outer circumference of a running glass optical fiber, forming an accompanying flow (f) composed of an inert gas (G1) near a surface of the resin by passing the glass optical fiber (2a) immediately after having the resin being applied through an atmosphere of the inert gas, and forming a coating by irradiating the resin coated with the accompanying flow with ultraviolet ray to cure the resin while the glass optical fiber accompanied by the accompanying flow is passed through a UV transmission tube (132) to which a gas containing oxygen (G2) is supplied.