OPTICAL FIBER CABLE

• Main Authors: OSADA HISAMICHI, SATO FUMIAKI, NAGAO YOSHIAKI
• Format: Patent
• Language: English; Japanese
• Published: 08.04.2021
• Subjects: OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS; OPTICS; PHYSICS

To provide an optical fiber cable that makes it possible to lengthen a pressure-feeding distance by providing a cable sheath with a projection and can also facilitate removing the projection of the cable sheath, in an air pressure feed optical fiber cable.SOLUTION: An optical fiber cable 1A comprises a plurality of coated optical fibers, and a cable sheath including the plurality of coated optical fibers and having a projection 7 on an outer peripheral part 41. Angles θ1 each formed between tangential lines 7b and 41b of mutual surfaces at intersections 8a and 8b between the surface 7a of the projection 7 and the surfaces 41a, which are not the projection 7, of the outer peripheral part 41 are 90 degrees or less in a radial cross section of the cable.SELECTED DRAWING: Figure 2 【課題】空気圧送用の光ファイバケーブルにおいて、ケーブル外被に突起を設けることで圧送距離を伸ばすことができると共に、ケーブル外被の突起を容易に除去できる光ファイバケーブルを提供する。【解決手段】複数の光ファイバ心線と、複数の光ファイバ心線を内包し、外周部４１に突起７を有するケーブル外被と、を有し、ケーブル径方向の断面において、突起７の表面７ａと突起７ではない外周部４１の表面４１ａとの交点８ａ，８ｂにおける表面同士の接線７ｂ，４１ｂが成す角度θ１が９０度以下である、光ファイバケーブル１Ａ。【選択図】図２