公开(公告)号：EP2995980A4

公开(公告)日：2016-12-14

申请号：EP14794615

申请日：2014-04-28

申请人： FUJIKURA LTD ,  NIPPON TELEGRAPH & TELEPHONE

发明人： SAJIMA YOSHIE ,  MATSUZAWA TAKASHI ,  ISAJI MIZUKI ,  OSATO KEN ,  OKADA NAOKI ,  NAKANE HISAAKI ,  YAMADA YUSUKE ,  KAKUTA DAISUKE ,  HAMAGUCHI SHINYA ,  SHIBATA YUKIHIKO

IPC分类号： G02B6/44

CPC分类号： G02B6/4404 ,  G02B6/4495 ,  G02B6/4498

摘要： Provide is an optical fiber ribbon whereby a tape forming member can be easily removed after single core separation. The present invention is provided with: a plurality of optical fiber cores (10a, 10b) arranged in parallel spaced from each other; and a tape forming member (20) having coating portions (21a, 21b) covering an outer circumference of the optical fiber cores (10a, 10b), and a coupling portion (22a), integrally formed with the coating portions (21a, 21b), intermittently coupling adjacent optical fiber cores (10a, 10b), wherein the coating portions (21a, 21b) have opening portions (31, 32) to expose parts of surfaces of the optical fiber cores (10a, 10b), and at least a part of the coating portions (21a, 21b) is continuous in a longitudinal direction of the optical fiber cores (10a, 10b).

公开(公告)号：EP2821831A4

公开(公告)日：2015-11-04

申请号：EP13754503

申请日：2013-02-27

申请人： FUJIKURA LTD ,  NIPPON TELEGRAPH & TELEPHONE

发明人： ISAJI MIZUKI ,  SAJIMA YOSHIE ,  OSATO KEN ,  OKADA NAOKI ,  MATSUZAWA TAKASHI ,  TAKE YUKIKO ,  YAMADA YUSUKE ,  HAMAGUCHI SHINYA ,  KAKUTA DAISUKE ,  NAKANE HISAAKI

IPC分类号： G02B6/44

CPC分类号： G02B6/4403 ,  G02B6/4495

摘要： Provided is an optical fiber ribbon capable of concurrently ensuring mid-span access performance and cable production performance. The optical fiber ribbon 1 includes three or more optical fibers 2 arranged in parallel and connecting portions 3 connecting the adjacent optical fibers 2, the connecting portions 3 being formed intermittently in each of a ribbon longitudinal direction X and a ribbon width direction Y. The optical fiber ribbon 1 including the connecting portions 3 having split strength which is set in the range from 1.50 gf to 21.0 gf, contributes to exhibiting both the mid-span access performance and the cable production performance.

公开(公告)号：EP2770357A4

公开(公告)日：2015-06-24

申请号：EP12842552

申请日：2012-10-15

申请人： FUJIKURA LTD ,  NIPPON TELEGRAPH & TELEPHONE

发明人： NAMAZUE AKIRA ,  OSATO KEN ,  OKADA NAOKI ,  YAMADA YUSUKE ,  KAKUTA DAISUKE ,  NAKANE HISAAKI ,  HAMAGUCHI SHINYA

IPC分类号： G02B6/44

CPC分类号： G02B6/4403 ,  G02B6/2551 ,  G02B6/2555 ,  G02B6/3636 ,  G02B6/4404 ,  G02B6/4405 ,  G02B6/441 ,  G02B6/443 ,  G02B6/448 ,  G02B6/4482 ,  G02B6/4489

摘要： Provided is an optical fiber ribbon capable of achieving higher density and reduction in diameter and accurately placing optical fibers in V-shape grooves in a fusion machine without failure. The optical fiber ribbon 1 includes three or more of optical fibers 2 arranged in parallel and connecting portions 3 each connecting adjacent two optical fibers 2 together, the connecting portions 3 being intermittently provided in each of a ribbon longitudinal direction and a ribbon width direction. The optical fiber ribbon 1 has an outer diameter dimension of the optical fibers 2 which is set to smaller than or equal to 220 µm, and has a distance between the centers of the adjacent two optical fibers which is set to 250±30 µm.