Optical fibre cable

Abstract

An optical fiber cable including an axial portion and a plurality of portioning plate portions housed in a space encircled by a sheath; and the axial portion and the portioning plate having a sectional shape that the partitioning plate portions radially extend toward an inner circumferential surface of the sheath from the axial portion; wherein the space is divided into a plurality of partitioned slots by the partitioning plate portions having leading ends provided with enlarged portions in contact with the inner circumferential surface of the sheath and connecting portions connecting the enlarged portions to the axial portion, and optical fibers are distributed so that two or more optical fibers are not provided in a single partitioned slot.

Description

technical field [0001] The present invention relates to optical fiber cables (hereinafter referred to as "optical cables"), and more particularly, to optical cables using plastic optical fibers. Background technique [0002] In recent communications, optical fibers have been widely used to transmit large amounts of information quickly and reliably. Optical fibers include silica optical fibers such as silica single-mode optical fibers, plastic optical fibers (POF) and others. In particular, plastic optical fibers have larger diameters and are more flexible than silica single-mode optical fibers. From this point of view, an optical fiber cable using a plastic optical fiber with an optical transmission line has good workability in optical fiber terminal processing and connection processing required for installation and wiring. After being introduced from trunk cables, branch cables, or line cables for use in local area network systems, fiber optic cables act like short-distan...

AI Technical Summary

Problems solved by technology

[0008] 1) In the optical cable with the structure shown in Fig. 4(a), the thermal test (70°C, 24 hours) shows that the resin used as the covering material, such as polyethylene, will heat shrink and form small holes on the surface of the optical fiber, so according to Increased attenuation creates heat resistance issues

[0009] 2) In an optical cable having the structure shown in Fig. 4(b), providing multiple optical fibers in a single cavity creates a problem of pressure resistance, when an external force is applied to the optical cable, such as due to someone stepping on the optical cable Yes, multiple fibers in a single cavity will touch each other and compress each other, worst case crush each other, or experience plastic deformation to increase attenuation

Optical cables wrapped with GI-POF may have pinholes caused by heat shrinkage of the cladding material, application of external force, flexure during bending, or other factors, and transmission properties may deteriorate due to these disturbances

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