Sumitomo Electric Industries, Limited

Nippon Telegraph and Telephone Corporation

Kenji Morita

Shigeru Tanaka

Hiroaki Sano

Hiroki Ishikawa

Kazuo Hogari

Osamu Kawata

Nobumasa Nirasawa

In an optical cable according to the present invention, a grooved spacer has a plurality of grooves in its circumference, and the cutting direction of the grooves is inverted at predetermined periods. Optical fibers are received in the respective grooves. On the circumference of the grooved spacer, a linear member is provided around the grooved spacer along the longitudinal direction of the optical cable at a predetermined period. The linear member is fixed to the grooved spacer by welding or bonding in the portions where they touch the outer circumferences of the grooved spacer so as to restrain the optical fibers. The linear member restraining the optical fiber to be taken out are cut in positions above the groove in which the optical fiber is received so that the required optical fiber can be taken out.

Optical cable and manufacturing method thereof

Growing community of inventors

Kanagawa, Japan

Kenji Morita