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Optical fiber colored core, optical fiber tape core and optical fiber cable

An optical fiber ribbon and core wire technology, applied in glass optical fibers, clad optical fibers, optics, etc., can solve the problems of poor microbending resistance, difficulty in taking into account both microbending resistance and temperature and water resistance, and it is difficult to increase transmission loss. , Good effect of anti-microbending characteristics

Active Publication Date: 2014-04-30
FURUKAWA ELECTRIC CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When the relaxation modulus is lowered as in the optical fiber disclosed in Patent Document 1, although the hot water resistance is excellent, the secondary coating becomes soft and tends to deteriorate the microbend resistance.
[0012] Therefore, it is difficult to balance microbend resistance and warm water resistance

Method used

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  • Optical fiber colored core, optical fiber tape core and optical fiber cable
  • Optical fiber colored core, optical fiber tape core and optical fiber cable
  • Optical fiber colored core, optical fiber tape core and optical fiber cable

Examples

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Embodiment

[0046] Hereinafter, the present invention will be described with reference to examples of the colored optical fiber 1 described in the foregoing embodiments, but the present invention is not limited to the following examples.

[0047] When manufacturing the colored core wire of the sample optical fiber, as the glass optical fiber 2, a silica glass optical fiber with an outer diameter (diameter) of about φ125 μm is used, and a primary covering layer 31 is formed on its outer periphery, and a colored secondary covering layer 32 is formed on its outer periphery, make figure 1 Colored optical fiber 1 having a double-layer structure shown (Examples 1 to 4, Comparative Example 1). The outer diameter of the primary coating layer 31 was set to 185 μm, and the outer diameter of the secondary coating layer 32 was set to 245 μm.

[0048] In addition, in addition to using a colorless material as the secondary covering, it is also made into an optical fiber, and a colored layer 9 is provi...

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Abstract

The present invention provides an optical fiber colored core which has superior microbend-resistant characteristics and warm-water resistance, as well as an optical fiber tape core and optical fiber cable using the same. Provided is an optical fiber colored core (1) which has two layers of cladding layers, which are a primary cladding layer (31) and a secondary cladding layer (32), wherein either the primary cladding layer (31) or the secondary cladding layer (32) is colored, the equilibrium modulus of either layer is less than or equal to 60 MPa, and the relaxation modulus of the secondary cladding layer (32) is greater than or equal to 410 MPa. Also provided are an optical fiber tape core (4) using the same, and an optical fiber cable (8).

Description

technical field [0001] The invention relates to an optical fiber colored core wire accommodated in an optical cable. In particular, it relates to a colored optical fiber with a double-layer structure in which a colored layer is omitted by coloring the first or second layer of an optical fiber, and an optical fiber ribbon and an optical cable using the same. Background technique [0002] Generally, the colored core wire of an optical fiber has a three-layer structure. The three-layer structure is provided with a thin colored layer of about 2-10 μm on the outer periphery of the primary covering layer with a buffer function and the secondary covering layer that acts as a protective layer. identify. For example, a colored optical fiber is provided with a tape layer on the outer periphery of the colored layer to be used as an optical fiber ribbon, which is installed in a grooved optical cable. Considering the connectivity between the colored core wires of optical fibers, it is ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B6/44
CPCG02B6/4482G02B6/4409G02B6/4402G02B6/4403G02B6/02395
Inventor 田中广树笠原稔望月浩二斋藤稔中岛康雄
Owner FURUKAWA ELECTRIC CO LTD
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