| 摘要 |
In a fixing portion of an optical fiber-type wave-divider-multiplexer, an optical fiber glass portion (2) is fixed to a fixing member by an adhesive (5). A groove (6) reaching at least a core portion of the optical fiber is cut from the fixing member. This groove may be cut up to a position where the optical fiber is cut across. An optical filter (7) is inserted into the cut groove, and is fixed by an adhesive or the like. As a result, the optical fiber can be provided with light passing characteristics corresponding to the characteristics of the optical filter. Conventionally, quartz glass is used as the fixing member of the optical-fiber fixing portion. However, the cutting of a groove in the quartz glass by a slicer is very difficult since the quartz glass is an anisotropic brittle material. In the light of facilitating the cutting of the groove, crystalline glass is suitable and facilitates the cutting of the groove. In addition, as the optical-fiber fixing member, a plastic, ceramic, stainless steel, or the like is sometimes used. These materials permit groove cutting by the slicer without a problem. |
