| 摘要 |
PURPOSE:To eliminate the strain of a cladding by the slip effect of a tape without exerting any direct influence upon an optical fiber by winding with the internals surface of the cladding with a tape which has a low refraction coefficient or no adhesiveness in an open or overlap state. CONSTITUTION:The internal surface of the cladding 3 which forms the sheath of an optical fiber cable is wound with the tape 4 which has the low friction coefficient or no adhesiveness in the open or overlap state, and the optical fiber cable is heated for a certain time below the heat-resistance temperature of the cladding material. Consequently, residual strain induced at the time of the extrusion molding of the cladding materials is released and the contraction of the cladding in the lengthwise direction of the cable is prevented from affecting the optical fiber directly through the slip effect of the tape wound around the external surface of the cladding, thereby eliminating the strain of the cladding. |
