| 摘要 |
PROBLEM TO BE SOLVED: To provide an optical fiber tape unit and an optical fiber cable in which optical fiber cores are easily separable from an optical fiber ribbon by hand, the optical fibers are easily identified during and after the separation job, an accidental cut is avoided as much as possible and the optical fibers are easily handled. SOLUTION: The optical fiber tape unit comprises a plurality of optical fiber cores each having an outer diameter of 0.4 mm or more and consisting of an optical fiber strand composed of an optical fiber composed of a core and a clad, a primary coating layer and a secondary coating layer and an overcoat layer formed around the outer circumference of the fiber strand, and a member for coupling the plurality of optical fiber cores arranged in parallel. Assuming that a Young's modulus of the overcoat layer is E1 and a cross-sectional area A1 and a Young's modulus of the coupling member is E2 and a cross-sectional area A2, following relations are satisfied: E1≤E2 and E1A1≥E2A2. COPYRIGHT: (C)2006,JPO&NCIPI
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