| 摘要 |
PROBLEM TO BE SOLVED: To provide a primary coated optical fiber that facilitates connection as well as resisting fracture, and to provide a secondary coated optical fiber ribbon formed therewith. SOLUTION: The primary coated optical fiber (1) is provided with: a spare coating layer (13) nonseparable from the clad layer (12), on the outer circumference of a clad layer (12); a soft coating layer (14) on the outer circumference of the spare coating layer (13); and a hard coating layer (15) further on the outside of the soft coating layer (14). The spare coating layer (13) has a thickness of 2μm or thicker, making the outer diameter of the optical fiber 125μm including the spare coating layer (13), and having a glass transition temperature higher than that of the hard coating layer (15). COPYRIGHT: (C)2006,JPO&NCIPI
|
