| 摘要 |
PURPOSE:To increase the connection strength of a connection part and to reduce an increase in light loss by removing the metallic coatings of optical fibers and forming a connection end surface newly, butting those connection end surface against each other and connecting them by fusion, and re-forming a metallic coating at the coating removal parts. CONSTITUTION:Tips of metal-coated optical fibers 1 and 1 are dipped in a solution of hydrochloric acid, acetic acid, or their mixed acid to remove metallic coatings. Then, those removal parts 5, 5 are washed and dried and then cut to obtain new smooth end surfaces 8, 8. Those end surfaces 8, 8 are connected together by fusion in an accurate abutting state. A metallic coating is re-formed by vapor deposition at the coating removal part 10 of the connected metal-coated optical fiber 9. Thus, the welding operation of optical fiber bare wires is performed smoothly and coating metal is prevented from mixing with a fiber fusion part during fusion connection, so high connection strength is obtained, reliability is superior for a long period, and an excellent connection with a less increase in light loss is made. |
