光ファイバケーブルの長尺布設技術

抄録

To fully utilize optical fiber cable characteristics; such as low loss, small outer diameter and light weight, a cable is installed in the longest possible unit distance. To implement this, some pullers are installed in intermediate manholes to distribute the cable pulling force. An optical fiber cable pulling system has been developed which measures loading tension on the cable using tension sensors and automatically controls pulling velocity so that the measured tension retains a proper value in the optical fiber cable installation.