| 摘要 |
This invention discloses broad bandwidth optical fibers which have a broad bandwidth suitable for data-communication, are free from fiber cracking or chipping if a crimp-type connector is attached with sufficient pulling resistant force to hold the fiber firmly, minimize the connection loss through a small crimping optical loss and a accurate axial alignment, facilitate connection with existing GI quartz optical fibers, which have a fiber diameter of 125 mu m, and offer excellent compatibility with such existing GI quartz optical fibers. Broad bandwidth optical fibers pertaining to this invention are graded index broad bandwidth optical fibers fabricated from a core made of quart-based glass with a graded refractive index profile, a quartz glass cladding provided over said core, and polymer covering layer provided over said cladding, with said polymer covering layer made of a UV-cured hard polymer with a Shore hardness of D 55 or more and a thickness of 5 mu m or more. Jacketed optical fiber units are then produced by providing a primary coating over an optical fiber and a secondary coating over a primary-coated optical fiber or fibers. Finally optical fiber cords are produced by providing a polymer sheath around a jacketed optical fiber unit. <IMAGE> |
