| 摘要 |
A coated optical fiber is shown in which, by coating a glass optical fiber with a primary coating having a storage modulus E' of 0.01 kg/mm<2 >to 2.0 kg/mm<2 >at 25° and 110 Hz and an adhesion of 10 g/cm to 200 g/cm to the glass optical fiber, delamination at the interface between the glass optical fiber and the primary coating, and voids are prevented during and after the production, for example, on the line during drawing and winding. An optical fiber ribbon of the present invention, which is formed by collectively coating the coated optical fibers each including a primary coating with a storage modulus E' of 0.01 kg/mm<2 >to 0.5 kg/mm<2 >and an adhesion of 10 g/cm to 100 g/m, has a high delamination resistance and a good collective strippability of coatings. In an optical fiber unit of the present invention which is formed by collectively coating the coated optical fibers having a storage modulus E' of 0.01 kg/mm<2 >to 0.5 kg/mm<2 >and an adhesion of 100 g/cm to 200 g/cm, delamination and voids will not occur.
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