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Optical fiber core line and optical fiber ribbon core line

一种光纤心线、光纤的技术，应用在玻璃光纤、包层光纤、光导等方向，能够解决传输损耗增大、光纤心线暴露等问题，达到抑制分层的效果

Inactive Publication Date: 2008-09-03
FURUKAWA ELECTRIC CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] Due to the above situation, as shown in Patent Document 1, even if the weight change rate due to the water immersion of the ink as the colored layer is properly set, there are cases where the optical fiber core is exposed to water and the transmission loss increases.

Method used

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  • Optical fiber core line and optical fiber ribbon core line
  • Optical fiber core line and optical fiber ribbon core line
  • Optical fiber core line and optical fiber ribbon core line

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Embodiment Construction

[0030] Hereinafter, embodiments of the invention will be described with reference to the drawings.

[0031]Preferred embodiments for carrying out the present invention are as follows. That is, the optical fiber is manufactured by covering the optical fiber with three layers of coating resin, namely, a primary layer, a secondary layer, and a colored layer. For each resin, an ultraviolet curable resin was used. Furthermore, a plurality of these optical fiber cores are arranged in parallel in a planar shape, and are collectively covered with a ribbon-shaped resin made of ultraviolet curable resin to form an optical fiber ribbon core.

[0032] As an embodiment of the present invention, such as figure 1 As shown, various types of optical fiber 5 are manufactured in which an optical fiber 1 made of silica glass is covered with three layers of covering resin, namely, a primary layer 2 , a secondary layer 3 , and a colored layer 4 . For each resin, an ultraviolet curable resin was ...

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PUM

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Abstract

An optical fiber core housed in an optical fiber cable, in particular, an optical fiber core that suppresses an increase of optical fiber transmission loss attributed to the use environment and aged deterioration through suiting of the optical fiber coating resin and coloring resin. It is intended to provide an optical fiber core, or optical fiber tape core, which avoids any increase of transmission loss attributed to the use environment and aged deterioration, especially exposure to water or high humidity. There is provided an optical fiber core with a cladding of at least two layers of coating resins, wherein the coating resin disposed in the outermost layer is a colored layer of coloring resin, and wherein when the optical fiber core is immersed in water heated at 60 DEG C for 168 hr, the ratio of coating resin leached from the optical fiber core is regulated so as to be 1.5 mass% or less.

Description

technical field [0001] The present invention relates to an optical fiber core contained in an optical fiber cable. In particular, it relates to an optical fiber core wire in which an optical fiber coating resin and a colored resin are properly provided, and an increase in transmission loss of the optical fiber due to the use environment or long-term aging is suppressed. Background technique [0002] In the drawing process of silica glass, in order to prevent the strength of the optical fiber from decreasing, the outer peripheral surface of the optical fiber is directly coated with a coating resin. As coating resins for optical fibers, ultraviolet curable resins are mainly used. As the ultraviolet curable resin, urethane acrylate or epoxy acrylate is used. [0003] In an optical fiber, transmission loss increases due to various external stresses or local severe deflection resulting therefrom. Therefore, in order to protect the optical fiber from such external stress, the o...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B6/44
CPCG02B6/02395G02B6/4482G02B6/4403
Inventor 中岛康雄田中广树新子谷悦宏望月浩二冈田光范
Owner FURUKAWA ELECTRIC CO LTD