| 摘要 |
PURPOSE:To connect optical fibers with high accuracy and to protect mechanically the optical fiber, by preparing a metallic sleeve having the inside diameter being roughly equal to the diameter of the fiber. CONSTITUTION:On the surface of an optical fiber 2, a metallic thin film is formed by vapor deposition or electroless plating, and by using the metallic thin film as a surface metal 5, a metallic film of prescribed thickness is formed by electrolytic plating, the optical fiber with the metallic film is cut to prescribed length, and thereafter, by removing the optical fiber 2 by a fluoric acid aqueous solution, and leaving only the metallic film part, an optical fiber use sleeve 6 is manufactured. At the time of inserting the optical fiber, the optical fiber is inserted by heating it and widening the inside diameter of the sleeve 6 by utilizing a differential thermal expansion between two layers. In such a way, an optical fiber connection of a low loss, which scarcely causes an optical axis misalignment between the optical fibers can be executed, and an optical element fiber can be protected mechanically. |
