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Optical fiber tape core wire able to be branched and branching method therefor

A technology of optical fiber ribbon and optical fiber, which is applied in the field of optical fiber ribbon core wire and its branches, and can solve the problems of increased transmission loss and other issues

Inactive Publication Date: 2010-12-08
THE FUJIKURA CABLE WORKS LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The object of the present invention is to provide an optical fiber ribbon that can suppress an increase in transmission loss due to bending of an optical fiber and is easy to branch by a common tool and a branching method thereof

Method used

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  • Optical fiber tape core wire able to be branched and branching method therefor
  • Optical fiber tape core wire able to be branched and branching method therefor
  • Optical fiber tape core wire able to be branched and branching method therefor

Examples

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Embodiment Construction

[0020] Below, refer to Figure 1 ~ Figure 3 An exemplary embodiment of the present invention will be described.

[0021] refer to figure 1 , The optical fiber ribbon 1 of this embodiment includes a plurality of parallel optical fibers 3 . Each optical fiber 3 is a conducting wire or a core wire, and the entirety thereof is covered and tapered by a collective coating layer 5 . Since the optical fiber 3 is formed into a single layer, the optical fiber ribbon 1 is relatively thin, which is suitable for space-saving applications. Of course, the optical fiber 3 may also be multi-layered. In addition, for the purpose of distinguishing the optical fibers 3 from each other, the surface or any surface thereof may be colored.

[0022] Grooves 5A are formed in one or more gaps between the optical fibers 3 on the collective cladding layer 5 , and each groove 5A is formed over the entire length of the collective cladding layer 5 in the longitudinal direction. Cutouts 7 are formed alon...

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PUM

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Abstract

An optical fiber tape core wire can be branched using some tool. The optical fiber tape core wire comprises a plurality of optical fibers running in parallel, a collective coating which covers the plurality of optical fibers entirely, a recess formed in at least any one gap between the optical fibers and on the collective coating, and a plurality of slits arranged in series along each recess at a predetermined interval and permitting cleavage of the collective coating by inserting a tool through the collective coating and moving the tool along the recess. Length of the slit is set such that the bend of the optical fiber caused by spreading the slit with the tool does not exceed the allowable radius of curvature of the optical fiber.

Description

technical field [0001] The invention relates to a branchable optical fiber ribbon core wire and a branching method thereof. Background technique [0002] For the purpose of realizing a plurality of independent optical communications, an optical fiber ribbon in which a plurality of optical fibers are bundled into a ribbon has conventionally been used. A plurality of optical fiber ribbon core wires are further bundled, and the whole is covered to form an optical fiber cable and to lay it. After the optical fiber cable is laid, one core or several cores may be taken out and connected to other optical fibers to be the object of work called intermediate rear branching. When branching after the middle, in order to take out one or more optical fibers, it is first necessary to tear off the coating of the ribbon to branch the optical fiber ribbon, but usually a special tool is required for this work. [0003] When the middle rear branch is performed, the optical fiber is bent due t...

Claims

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Application Information

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IPC IPC(8): G02B6/44G02B6/00
CPCG02B6/4498G02B6/4495G02B6/4404Y10T83/04G02B6/567G02B6/4431
Inventor 佐藤由纪子佐野惠子冈田直树
Owner THE FUJIKURA CABLE WORKS LTD