Long-Distance Optical Fiber Cable Installation System Using Automatic Control Puller
Takenori Morimitsu* and Masao Terasawa**
*Institute of Systems & Information Technologies Kyushu, 2-1-22 Momochihama, Sawara-ku, Fukuoka 814-0001, Japan
**Access Network Systems Laboratories, NTT Corp., 1-7-1 Hanabatake, Tukuba-shi, Ibaraki 305-0805, Japan
To fully use optical fiber cable features such as low loss, small diameter, and light weight, cables are installed over the longest possible unit distance using pullers installed in intermediate manholes to distribute cable pulling force. An optical fiber cable pulling system has been developed that measures loading tension on the cable using tension sensors and automatically controls pulling speed so that tension is appropriate.