公开(公告)号：US20240319463A1

公开(公告)日：2024-09-26

申请号：US18578638

申请日：2022-04-25

申请人： Fujikura Ltd.

发明人： Noriaki Yamashita ,  Itaru Ishida ,  Ken Osato

IPC分类号： G02B6/44

CPC分类号： G02B6/4403

摘要： An optical fiber ribbon includes five or more optical fibers disposed in a disposition direction perpendicular to a longitudinal direction of the optical fiber ribbon and connection parts disposed intermittently in the longitudinal and disposition directions. Each of the connection parts is disposed between and connects adjacent ones of the optical fibers. The optical fiber ribbon has a first high-density region and a first low-density region disposed at different positions in the longitudinal direction and a second high-density region and a second low-density region disposed at different positions in the longitudinal direction. At least two of the connection parts having different positions from each other in the longitudinal and disposition directions are disposed in the first high-density region. At least another two of the connection parts having different positions from each other in the longitudinal and disposition directions are disposed in the second high-density region.

公开(公告)号：US20220317375A1

公开(公告)日：2022-10-06

申请号：US17634138

申请日：2020-07-13

申请人： FUJIKURA LTD.

发明人： Soichiro Kaneko ,  Koji Tomikawa ,  Ken Osato ,  Noriaki Yamashita

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

摘要： 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：US20230266556A1

公开(公告)日：2023-08-24

申请号：US18012371

申请日：2021-06-22

申请人： Fujikura Ltd.

发明人： Noriaki Yamashita ,  Akira Namazue ,  Ken Osato

IPC分类号： G02B6/44

CPC分类号： G02B6/448 ,  G02B6/4482

摘要： An optical fiber unit according to the present disclosure includes a plurality of intermittently-connected optical fiber ribbons. At least one of the optical fiber ribbons includes a plurality of optical fibers including a first optical fiber, and a second optical fiber that is longer than the first optical fiber. Conditions (AA) and c

100
×

{





(


2
⁢
Y

b

)

2

+
1


-
1

}

公开(公告)号：US11927803B2

公开(公告)日：2024-03-12

申请号：US17634138

申请日：2020-07-13

申请人： FUJIKURA LTD.

发明人： Soichiro Kaneko ,  Koji Tomikawa ,  Ken Osato ,  Noriaki Yamashita

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

CPC分类号： G02B6/2555 ,  G02B6/245 ,  G02B6/25 ,  G02B6/2551 ,  G02B6/44 ,  G02B6/4403 ,  G02B6/46 ,  G02B6/255

摘要： 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：US20240168230A1

公开(公告)日：2024-05-23

申请号：US18427345

申请日：2024-01-30

申请人： Fujikura Ltd.

发明人： Soichiro Kaneko ,  Koji Tomikawa ,  Ken Osato ,  Noriaki Yamashita

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

CPC分类号： G02B6/2555 ,  G02B6/245 ,  G02B6/25 ,  G02B6/2551 ,  G02B6/44 ,  G02B6/4403 ,  G02B6/46 ,  G02B6/255

摘要： 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.