| 摘要 |
PURPOSE:To decrease optical loss by constituting terminal parts of a material having the etching rate higher than the etching rate of an optical fiber, projecting the end faces of the optical fibers by an etching treatment slightly from the terminal parts and butting the end faces to each other. CONSTITUTION:The terminal part 2 is constituted of the material which is more easily etched than the optical fiber 1. The end face of the optical fiber 1 and the terminal part 2 are polished to a specular surface state and are formed flush with each other. The end part is dipped for specified time in an etching liquid 3, then the end of the terminal part 2 projects slightly from the end of the terminal part 2 and a projecting part 5 is formed. The length of the projection is adjusted by the dipping time in the etching liquid. A pair of the optical fibers 1 and the terminal parts 2 having such end shapes are butted to each other and a precision sleeve 4 is packaged thereto, by which an optical connector is constituted. The space between the fibers 1 is therefore eliminated, by which the optical loss by the Fresnel reflection is decreased and operability is improved. The long-term stability is thus assured. |
