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1. (WO2017033584) MULTICORE FIBER AND OPTICAL CABLE

Pub. No.:    WO/2017/033584    International Application No.:    PCT/JP2016/070011
Publication Date: Fri Mar 03 00:59:59 CET 2017 International Filing Date: Thu Jul 07 01:59:59 CEST 2016
IPC: G02B 6/02
G02B 6/032
G02B 6/44
Applicants: FUJIKURA LTD.
株式会社フジクラ
NATIONAL UNIVERSITY CORPORATION HOKKAIDO UNIVERSITY
国立大学法人北海道大学
Inventors: SAITO Shota
斉藤 翔太
TAKENAGA Katsuhiro
竹永 勝宏
SAITOH Kunimasa
齊藤 晋聖
FUJISAWA Takeshi
藤澤 剛
Title: MULTICORE FIBER AND OPTICAL CABLE
Abstract:
This multicore fiber is provided with: at least three cores that allow single-mode transmission; a common cladding that covers the periphery of the at least three cores; and a low-refractive-index portion having a lower refractive index than the cladding. The multicore fiber has a region where the at least three cores are annularly arranged on the cross-section orthogonal to the longitudinal direction. At least a part of the low-refractive-index portion is arranged inside the minimum inscribed circle between the adjacent two cores in the region.