公开(公告)号：US20220269023A1

公开(公告)日：2022-08-25

申请号：US17632711

申请日：2019-10-30

Applicant: FUJIKURA LTD.

Inventor： Soichiro Kaneko ,  Koji Tomikawa ,  Ken Osato

IPC: G02B6/44

Abstract: An intermittently connected optical fiber ribbon includes optical fibers, disposed side by side in a width direction of the optical fibers, and connecting portions that each intermittently connect two adjacent ones of the optical fibers. A center-to-center distance between any of the two adjacent ones of the optical fibers is greater than a diameter of the individual optical fibers. A total volume shrinkage per meter per 1° C. of the connecting portions of a single one of the optical fibers is 0.00070 mm3/m·° C. or lower.

公开(公告)号：US20210341695A1

公开(公告)日：2021-11-04

申请号：US17282626

申请日：2019-09-18

Applicant: FUJIKURA LTD.

Inventor： Go Taki ,  Masayuki Ishioka ,  Mizuki Isaji ,  Tomoaki Kaji ,  Soichiro Kaneko ,  Koji Tomikawa ,  Akira Namazue ,  Ken Osato

IPC: G02B6/44

Abstract: A reticulated tube includes: a plurality of openings that are reticulately formed; peripheral parts that form the openings; and a branch part that is formed in a boundary of three or more openings. The branch part includes three or more peripheral parts extending from the branch part. The reticulated tube is configured to accommodate a plurality of optical fibers inserted through the reticulated tube. The peripheral parts are restricted by the branch part and are bendable.

公开(公告)号：US10670820B2

公开(公告)日：2020-06-02

申请号：US16326097

申请日：2017-09-11

Applicant: FUJIKURA LTD.

Inventor： Tomoaki Kaji ,  Soichiro Kaneko ,  Mizuki Isaji ,  Kouji Tomikawa ,  Ken Osato

IPC: G02B6/44 ,  G02B6/04

Abstract: An optical fiber unit includes a plurality of optical fibers; and two binding materials that bind the optical fibers. The two binding materials are wound around the optical fibers in an SZ shape, and are adhered to each other at respective reversed portions that form an adhesive part. The adhesive part has a plurality of intersection points of center lines of the two binding materials.

公开(公告)号：US20240219665A1

公开(公告)日：2024-07-04

申请号：US18425709

申请日：2024-01-29

Applicant: FUJIKURA LTD.

Inventor： Go Taki ,  Masayuki Ishioka ,  Mizuki Isaji ,  Tomoaki Kaji ,  Soichiro Kaneko ,  Koji Tomikawa ,  Akira Namazue ,  Ken Osato

IPC: G02B6/44

CPC classification number: G02B6/443 ,  G02B6/4486

Abstract: A fixing structure includes: an optical fiber group constituted by a plurality of optical fibers; a tubular member through which the optical fiber group is passed; a reticulated tube, one end part of the reticulated tube being disposed on an outer periphery of the tubular member, the optical fiber group being inserted through an extended section of the reticulated tube extending out from the tubular member; and a fixing member that fixes the tubular member which has the reticulated tube disposed on the outer periphery thereof.

公开(公告)号：US20240168230A1

公开(公告)日：2024-05-23

申请号：US18427345

申请日：2024-01-30

Applicant: Fujikura Ltd.

Inventor： Soichiro Kaneko ,  Koji Tomikawa ,  Ken Osato ,  Noriaki Yamashita

IPC: G02B6/255 ,  G02B6/245 ,  G02B6/25 ,  G02B6/44 ,  G02B6/46

CPC classification number: G02B6/2555 ,  G02B6/245 ,  G02B6/25 ,  G02B6/2551 ,  G02B6/44 ,  G02B6/4403 ,  G02B6/46 ,  G02B6/255

Abstract: An optical fiber arrangement method includes: preparing an intermittently connected optical fiber ribbon including optical fibers arranged side by side at a first pitch larger than a fiber diameter; holding a non-connecting region of the optical fiber ribbon with a holder, wherein connecting portions of the optical fiber ribbon intermittently connect the optical fibers extending out from the holder to each other; changing a width of the optical fiber ribbon in an interior of the holder; and arranging the optical fibers, extending out from the holder, with intervals of the optical fibers changed from the first pitch to a second pitch smaller than the first pitch by removing the connecting portions in a holding state where the holder is holding the optical fibers.

公开(公告)号：US11525972B2

公开(公告)日：2022-12-13

申请号：US17282626

申请日：2019-09-18

Applicant: FUJIKURA LTD.

Inventor： Go Taki ,  Masayuki Ishioka ,  Mizuki Isaji ,  Tomoaki Kaji ,  Soichiro Kaneko ,  Koji Tomikawa ,  Akira Namazue ,  Ken Osato

IPC: G02B6/44

Abstract: A reticulated tube includes: a plurality of openings that are reticulately formed; peripheral parts that form the openings; and a branch part that is formed in a boundary of three or more openings. The branch part includes three or more peripheral parts extending from the branch part. The reticulated tube is configured to accommodate a plurality of optical fibers inserted through the reticulated tube. The peripheral parts are restricted by the branch part and are bendable.

公开(公告)号：US11256056B2

公开(公告)日：2022-02-22

申请号：US16078586

申请日：2016-11-08

Applicant: FUJIKURA LTD.

Inventor： Mizuki Isaji ,  Soichiro Kaneko ,  Ken Osato

IPC: G02B6/44 ,  C03C25/1065 ,  C03C25/326

Abstract: A method for manufacturing an optical fiber ribbon includes: forming a colored layer on to each of a plurality of optical fibers and forming an optical fiber ribbon by curing a connecting material applied to a surface of the colored layer of each of the optical fibers to form connection parts that connect adjacent ones of the optical fibers. Forming the colored layer further includes: applying a coloring agent to the optical fibers and curing the coloring agent such that uncured resin remains on the surface of the colored layer. Forming the optical fiber ribbon further includes: applying the connecting material to the surface with the uncured resin and curing the connecting material and the uncured resin on the surface of the colored layer.

公开(公告)号：US20190271822A1

公开(公告)日：2019-09-05

申请号：US16334046

申请日：2017-09-08

Applicant: FUJIKURA LTD.

Inventor： Soichiro Kaneko ,  Tomoaki Kaji ,  Mizuki Isaji ,  Kouji Tomikawa ,  Ken Osato

IPC: G02B6/44

Abstract: An optical fiber unit includes: a plurality of optical fibers; and at least two binding materials that bind the plurality of optical fibers. The two binding materials are wound around the plurality of optical fibers in an SZ shape and adhered to each other at reversed portions of the SZ shape to form an adhesive part. The adhesive part extends along a longitudinal direction where the optical fiber unit extends, and 0.15≤L/(P/2)≤0.8 is satisfied where L is a length of the adhesive part in the longitudinal direction and P is a binding pitch of the two binding materials in the longitudinal direction.

公开(公告)号：US11927803B2

公开(公告)日：2024-03-12

申请号：US17634138

申请日：2020-07-13

Applicant: FUJIKURA LTD.

Inventor： Soichiro Kaneko ,  Koji Tomikawa ,  Ken Osato ,  Noriaki Yamashita

IPC: G02B6/245 ,  G02B6/25 ,  G02B6/255 ,  G02B6/44 ,  G02B6/46

CPC classification number: G02B6/2555 ,  G02B6/245 ,  G02B6/25 ,  G02B6/2551 ,  G02B6/44 ,  G02B6/4403 ,  G02B6/46 ,  G02B6/255

Abstract: An optical fiber arrangement method includes: preparing an intermittently connected optical fiber ribbon including optical fibers arranged side by side at a first pitch larger than a fiber diameter; holding a non-connecting region of the optical fiber ribbon with a holder, where connecting portions intermittently connect the optical fibers extending out from the holder to each other; changing a width of the optical fiber ribbon in an interior of the holder; and arranging the optical fibers, extending out from the holder, with intervals of the optical fibers changed from the first pitch to a second pitch smaller than the first pitch by removing the connecting portions in a state where the holder is holding the optical fibers.

公开(公告)号：US11536922B2

公开(公告)日：2022-12-27

申请号：US17632711

申请日：2019-10-30

Applicant: FUJIKURA LTD.

Inventor： Soichiro Kaneko ,  Koji Tomikawa ,  Ken Osato

IPC: G02B6/44

Abstract: An intermittently connected optical fiber ribbon includes optical fibers, disposed side by side in a width direction of the optical fibers, and connecting portions that each intermittently connect two adjacent ones of the optical fibers. A center-to-center distance between any of the two adjacent ones of the optical fibers is greater than a diameter of the individual optical fibers. A total volume shrinkage per meter per 1° C. of the connecting portions of a single one of the optical fibers is 0.00070 mm3/m·° C. or lower.