| 摘要 |
PURPOSE: An optical fiber cable is provided to maintain an original form and to improve a mechanical strength by inserting a tension line, eg. optical fiber inside of a tube. CONSTITUTION: The optical fiber cable comprises an outside protector, at least more than one tube inserting in the outside protector and having more than one optic fiber inside, and at least more than two tension lines inserting in home between a circumstance plane of the tube. The tension line is inserted between a space between home of the circumstance plane in the tube and a tape using at least two fiber reinforced plastics(FRP). The FRP is suitable for the tension line because of a low expansion rate.
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