Method for manufacturing intermittent bonding type optical fiber ribbon and intermittent bonding type optical fiber ribbon

Patent metadata

Field	Value
Publication number	US-11036024-B2
Application number	US-201916428739-A
Country	US
Kind code	B2
Filing date	May 31, 2019
Priority date	Dec 20, 2016
Publication date	Jun 15, 2021
Grant date	Jun 15, 2021

Abstract

A method for manufacturing an intermittent bonding type optical fiber ribbon which is capable of forming non-connection portions and intermittent connection portions between adjacent coated optical fibers formed into an optical fiber ribbon by performing a laser processing for the ribbon through irradiation with a pulse laser light, thereby making it possible to rapidly form the intermittent connection portions and the non-connection portions while maintaining high linear velocity of the coated optical fiber. The non-connection portions and the intermittent connection portions are formed in the obtained intermittent bonding type optical fiber ribbon through the irradiation with the pulse laser light, so the intermittent bonding type optical fiber ribbon becomes the intermittent bonding type optical fiber ribbon, which is capable of securing operability during collective connection and surely being subjected to an intermediate branching without damaging cable characteristics during high density mounting.

First claim

The invention claimed is:

1. A method for manufacturing an intermittent bonding type optical fiber ribbon in which a plurality of coated optical fibers are arranged in parallel to each other and intermittent connection portions intermittently connecting adjacent coated optical fibers to each other in a length direction are formed, the method comprising:
a step of forming the coated optical fibers into a ribbon by using a resin composition that does not contain a component which absorbs a pulse laser light;
a step of intermittently forming laser light absorbing portions that absorb the pulse laser light by applying a resin composition containing 0.3 to 5.0 mass % of a component which absorbs the pulse laser light, between the adjacent coated optical fibers; and
a step of forming the intermittent connection portions by irradiating, with the pulse laser light, the laser light absorbing portions to cut the portions, thereby leaving the intermittent connection portions.

2. The method for manufacturing an intermittent bonding type optical fiber ribbon according to claim 1 , wherein laser light absorbing portions are intermittently formed in the length direction of the coated optical fiber.

3. The method for manufacturing an intermittent bonding type optical fiber ribbon according to claim 2 , wherein the laser light absorbing portion is formed by applying the resin composition containing the laser light absorbing component which absorbs the laser wavelength.

4. The method for manufacturing an intermittent bonding type optical fiber ribbon according to claim 1 , wherein the laser light absorbing portion is formed by applying the resin composition containing the laser light absorbing component which absorbs the laser wavelength.

5. The method for manufacturing an intermittent bonding type optical fiber ribbon according to claim 1 , wherein a wavelength of the pulse laser light is 500 to 2000 nm.

6. An intermittent bonding type optical fiber ribbon manufactured by the method for manufacturing an intermittent bonding type optical fiber ribbon according to claim 1 .

7. A method for manufacturing an intermittent bonding type optical fiber ribbon in which a plurality of coated optical fibers are arranged in parallel to each other and intermittent connection portions intermittently connecting adjacent coated optical fibers to each other in a length direction are formed, the method comprising:
a step of forming the coated optical fibers into a ribbon by using a resin composition containing 0.3 to 5.0 mass % of a component that absorbs a pulse laser light; and
a step of forming the intermittent connection portions by intermittently irradiating, with the pulse laser light, portions between the adjacent coated optical fibers to cut the portions, thereby leaving the intermittent connection portions.

8. The method for manufacturing an intermittent bonding type optical fiber ribbon according to claim 7 , wherein a wavelength of the pulse laser light is 500 to 2000 nm.

9. An intermittent bonding type optical fiber ribbon manufactured by the method for manufacturing an intermittent bonding type optical fiber ribbon according to claim 7 , wherein the non-connection portions are intermittently formed by irradiation with the pulse laser light to cut the non-connection portions.

Assignees

• Furukawa Electric Co Ltd

Inventors

• Tanaka Hiroki
• Yokomizo Kenji
• Ishimura Tomohiro
• Hoshino Yutaka
• Iwama Masaki
• Otani Eisuke
• Matsushita Shunichi
• Arashitani Yoshihiro
• Yagi Takeshi

Classifications

• G02B6/4431

  with provision in the protective covering, e.g. weak line, for gaining access to one or more fibres, e.g. for branching or tapping (break-out terminations G02B6/4471) · CPC title

• G02B6/44

  Mechanical structures for providing tensile strength and external protection for fibres, e.g. optical transmission cables (cables incorporating electric conductors and optical fibres {where features relating to the optical fibres are not of interest} H01B11/22) · CPC title

• G02B6/448

  Ribbon cables · CPC title

• G02B6/4403 Primary

  with ribbon structure (G02B6/4429, G02B6/4439, G02B6/4479 take precedence) · CPC title

• G02B6/4482 Primary

  Code or colour marking · CPC title