| 摘要 |
PURPOSE:To optimally perform welding of a dummy rod which is welded and connected to the base material of an optical fiber for work in an after-stage of the base material of the optical fiber. CONSTITUTION:In a stage for gripping a single end of the base material 4 of an optical fiber and welding a dummy rod 7 to the other end of the mother material 4 of the optical fiber, while the respective butting parts 4a, 7a of both the base material 4 of the optical fiber and the dummy rod 7 are separated a little and heated, the shapes of the same are monitored by a shape detector 10. When the shapes become an optimally welding shape, the respective butting parts 4a, 7a are butted and automatically welded. |
