公开(公告)号：EP3196682A4

公开(公告)日：2018-04-18

申请号：EP15838410

申请日：2015-09-04

申请人： FURUKAWA ELECTRIC CO LTD ,  NIPPON TELEGRAPH & TELEPHONE

发明人： IMAMURA KATSUNORI ,  GONDA TOMOHIRO ,  SUGIZAKI RYUICHI ,  SAKAMOTO TAIJI ,  MORI TAKAYOSHI ,  WADA MASAKI ,  YAMAMOTO TAKASHI ,  YAMAMOTO FUMIHIKO

IPC分类号： G02B6/02 ,  C03B37/12 ,  C03B37/16 ,  G02B6/028 ,  G02B6/036

CPC分类号： G02B6/02042 ,  C03B37/01205 ,  C03B37/01222 ,  C03B37/027 ,  C03B37/16 ,  C03B2203/10 ,  C03B2203/18 ,  C03B2203/22 ,  C03B2203/23 ,  C03B2203/26 ,  C03B2203/34 ,  C03B2205/30 ,  G02B6/0288 ,  G02B6/0365

摘要： A multicore fiber includes a plurality of unit multicore fibers including a plurality of core portions and a clad portion which is formed in an outer circumference of the core portions and has a refractive index lower than a maximum refractive index of the core portions, the plurality of the core portions having substantially the same refractive index profile and different group delays at the same wavelength in the same propagation mode, wherein the core portions of the multicore fiber are configured so that the core portions of the plurality of the unit multicore fibers are connected in cascade, a maximum value of differential group delays between the core portions of the multicore fiber is smaller than a reduced value of a maximum value of differential group delays between the core portions of each unit multicore fiber as a value in terms of a length of the multicore fiber.

公开(公告)号：EP2530502A4

公开(公告)日：2017-09-27

申请号：EP11737062

申请日：2011-01-26

申请人： FUJIKURA LTD ,  NIPPON TELEGRAPH & TELEPHONE

发明人： TANIGAWA SHOJI ,  TAKENAGA KATSUHIRO ,  MATSUO SHOICHIRO ,  MATSUI TAKASHI ,  SAKAMOTO TAIJI ,  TSUJIKAWA KYOUZOU ,  TOMITA SHIGERU

IPC分类号： G02B6/02 ,  G02B6/032 ,  G02B6/036

CPC分类号： G02B6/02347 ,  G02B6/02333 ,  G02B6/03627