| 摘要 |
PROBLEM TO BE SOLVED: To strongly detain an optical fiber cord with Kevlar (R) into a sheet. SOLUTION: A portion extended outside the sheet of an optical fiber 2 wired inside the optical fiber sheet 11 is made into the optical fiber cord 8 having a structure in which a tension fiber 7 such as Kevlar (R) is inserted into a protective tube 4 with the optical fiber 2. An auxiliary sheet 12 is stuck on the optical fiber 2 wiring a lower sheet 1, the tension fiber 7 is arranged on the auxiliary sheet 12, and an upper sheet 1 is bonded thereon. The end 4a of the protective tube 4 is inserted into the sheet and fixed. Because the tension fiber 7 is detained by a layer different from the optical fiber 2, the problem caused by a mixed state with the thick optical fiber 2 that sufficiently strong adhesion is not obtained does not occur, thereby sufficiently strong adhesion and fixing are obtained. In wiring the optical fiber 2, there is no risk to cause a problem such as the bending of the optical fiber 2 affected by the tension fiber 7.
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