Sumitomo Electric Industries, Limited

Yukio Nomura

Keiji Osaka

Tomomi Moriya

Kazumasa Oishi

Yoshiji Sato

Rei Koike

Tatsuo Saito

Kenji Io

Katsuichi Omori

Yoshiharu Meguro

A molding dieis constituted by an upper dieand a lower diewhich are made of a material transparent to an ultraviolet light, and has a cavityconstituted by grooves, whereas a resin injection gateand a resin exit gateare provided so as to communicate with the cavity. A junction of an optical fiberis inserted into the cavity. A UV-curable resin is injected into the cavitysurrounding an exposing portion of the glass optical fiberfrom the resin injection gatepositioned at one of coating ends of the optical fiber, whereas a part thereof is discharged from the resin exit gatepositioned at the other coating end. The ultraviolet light is emitted through the lower dieso as to cure the resin, thereby forming a reinforcement resin coating. As a consequence, bubbles can be prevented from occurring due to the residual air within the reinforcement resin coating in the junction of the optical fiber

MOLDING APPARATUS FOR A REINFORCEMENT RESIN COATING OF GLASS OPTICAL FIBER EXPOSING PORTION OF AN OPTICAL FIBER JUNCTION, METHOD FOR MOLDING REINFORCEMENT RESIN COATING OF A GLASS OPTICAL FIBER EXPOSING PORTION OF AN OPTICAL FIBER JUNCTION, AND OPTICAL FIBER CABLE

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Kyoto, Japan

Yukio Nomura