Optical fibre cable and a method of manufacture
    2.
    发明授权
    Optical fibre cable and a method of manufacture 失效
    光纤电缆及其制造方法

    公开(公告)号:US4141623A

    公开(公告)日:1979-02-27

    申请号:US796815

    申请日:1977-05-13

    CPC分类号: G02B6/4486 G02B6/4414

    摘要: A multiple optical fibre cable in which the fibres can be used separately for long distance signal transmission comprises a central core round which the optical conductors are concentically disposed. Each optical conductor is constituted by an optical fibre protected by a first layer or covering of polyamide and a second layer or sheath of polyethylene. In order to avoid distortion of the optical fibre, the second layer or sheath is stretched. Application: Optical telecommunications cables.

    摘要翻译: 可以单独使用光纤用于长距离信号传输的多光纤缆包括光导体同心设置的中心芯圆。 每个光导体由被聚酰胺的第一层或覆盖物和聚乙烯的第二层或鞘层保护的光纤构成。 为了避免光纤变形,第二层或鞘被拉伸。 应用:光通信电缆。

    Method and apparatus for manufacturing a watertight optical fiber cable
    3.
    发明授权
    Method and apparatus for manufacturing a watertight optical fiber cable 失效
    用于制造水密光缆的方法和装置

    公开(公告)号:US4409154A

    公开(公告)日:1983-10-11

    申请号:US231527

    申请日:1981-02-04

    申请人: Bernard Grenat

    发明人: Bernard Grenat

    摘要: A method of manufacturing an optical fiber cable of the type which compri at least one cellular cylindrical structure of plastic material having a plurality of longitudinal bores housing individual optical fibers and filled with a viscous substance. The viscous substance is injected around the fibers under pressure as they pass along tubes which each have a gap of some length so that said viscous substance can enter the tubes. The optical fibers coated with viscous substance are made to protrude beyond the ends of said tubes. A thermoplastic material is simultaneously extruded through an annular orifice and around the optical fibers under a pressure which is sufficient to completely surround said coated optical fibers. The cylindrical structure thus obtained is rapidly cooled.

    摘要翻译: 一种制造这种类型的光纤电缆的方法,该光纤电缆包括至少一个塑料材料的圆柱形结构,其具有多个容纳各个光纤并且填充有粘性物质的纵向孔。 当粘合物通过各自具有一定长度的间隙的管时,粘性物质在压力下被注入到纤维周围,使得所述粘性物质可以进入管中。 涂覆有粘性物质的光纤被制成突出超过所述管的端部。 热塑性材料在足以完全包围所述涂覆的光纤的压力下通过环形孔口和光纤周围同时挤出。 由此获得的圆柱形结构被快速冷却。