| 摘要 |
<p>PURPOSE:To remove residual distortion and to prevent a core from movement by previously applying prescribed times or more the tensile force obtained at the time of stringing to a suspension wire part and anchoring the suspension wire part on an electric pole or the like with prescribed tensile force to suppress the movement of an optical cable core part in the longitudinal direction. CONSTITUTION:Before anchoring the optical cable, an excessive tensile force, e.g. twice or more the tensile force obtained at the time of stringing, more than the tensile force of the stringing is applied to the suspension wire 23. A housing 22 is drawn out together with the suspension wire 23 and an optical cable core 21 is drawn into the housing 22 by a moving distance l1 from the initial state of (A) to the state shown in (B). When the tensile force applied to the suspension wire 23 is temporalily released, the optical cable core 21 tries to restore to the original state, but the core 21 is not restored to the initial state and shifted as shown in (C), so that the quantity l2 of distortion release is lefted. Thus, the residual distortion is removed by connecting the optical cable to a connection part after treating the optical cable, improving the reliabil ity of the optical fiber core due to the movement of the optical cable core.</p> |
