| 摘要 |
PURPOSE:To eliminate such problems that the fiber is not ruptured even when residual compressive stress is present on the fiber surface and that a complete mirror surface shape is not formed even after rupture like a Ti-doped fiber. CONSTITUTION:When the optical fiber 14 is cut, a fine flaw is made in the surface and then tensile stress is applied to the part to rupture the optical fiber. The residual compressive stress of the optical fiber 14 is removed by a heat treatment before a process wherein the flaw is made. Further, a couple of electrodes 30 which faces each other across the optical fiber 14 are added to the optical fiber cutting device equipped with a cutting edge 22 which gives the fine flaw to the optical fiber 14 and a pressing member 24 which bends and breaks the optical fiber to enable the heat treatment. The electrodes move in a (y) direction. |
