公开(公告)号：JPH03209408A

公开(公告)日：1991-09-12

申请号：JP27206990

申请日：1990-10-09

Applicant: STC PLC

Inventor： RARUFU SUTEHOORU

IPC: G02B6/44

Abstract: PURPOSE: To prevent the damage without degrading a strength member by protecting a photoconductor from stresses in the lengthwise direction and the transverse direction applied to the strength member and roughing the surface of the strength member by forming marks on the surface of the strength member to improve the grip between a sheath and the strength member. CONSTITUTION: A homogeneous noncoductive rod 1 made of glass fiber reinforced resin has a rectangular slot 2 having projecting curve edges 2A and 2B, and an optical fiber ribbon element 3 is included in the slot 2. The rod 1 functions as a cable strength member and a cable sheath and has a rough face 1A to enhance adhesion between a sheath 7 and the rod 1, and a binder 6 is spirally provided so that most of the face 1A of the rod 1 comes into direct contact with the sheath 7. The constitution of the rough face 1A has molding dimples made by a woven tape placed on the outside of the rod during production, and the surface of the rod is stamped with the shape of the woven tape. Thus, a photoconductor is stored, and the damage due to treatment of degradation particles on the face is prevented.

公开(公告)号：JPH0394211A

公开(公告)日：1991-04-19

申请号：JP17430890

申请日：1990-06-29

Applicant: STC PLC

Inventor： RARUFU SUTEHOORU ,  ANDORIYUU SAMAAZU

IPC: G02B6/44

Abstract: PURPOSE: To reduce tensile force to an optical fiber ribbon-shaped element by making wavy a self-supporting type ribbon-shaped optical fiber element and a non-optical ribbon-shaped element inside a groove along the length of a cable and uniformly distributing the excessive length along the cable. CONSTITUTION: A self-supporting type ribbon-shaped optical fiber element 3 and a non-optical ribbon-shaped element 3A extended along this optical element 3 are provided inside a lengthwise groove 2 of the cable, both the elements 3 and 3A are constituted wavy along the length of the cable, and the optical ribbon-shaped element 3 for the excessive length is uniformly distributed along the cable. Besides, inside a slot 2, there is a ribbon inserting part existent along the optical ribbon-shaped element with the prescribed tensile force coefficient equal with or extremely similar to that of the optical element. Thus, the tensile force to the ribbon-shaped optical fiber element can be reduced.