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1. (WO2017061184) MULTICORE OPTICAL FIBER, MULTICORE OPTICAL FIBER CABLE, AND OPTICAL FIBER TRANSMISSION SYSTEM

Pub. No.:    WO/2017/061184    International Application No.:    PCT/JP2016/074869
Publication Date: Fri Apr 14 01:59:59 CEST 2017 International Filing Date: Fri Aug 26 01:59:59 CEST 2016
IPC: G02B 6/02
H04B 10/25
H04J 14/00
H04J 14/04
H04J 14/06
Applicants: SUMITOMO ELECTRIC INDUSTRIES, LTD.
住友電気工業株式会社
Inventors: HAYASHI Tetsuya
林 哲也
Title: MULTICORE OPTICAL FIBER, MULTICORE OPTICAL FIBER CABLE, AND OPTICAL FIBER TRANSMISSION SYSTEM
Abstract:
The present embodiment relates to a MCF and the like wherein the strength of mode coupling or power coupling between adjacent cores included in a single coupled core group is set to an appropriate level for reducing DGD. The MCF includes at least one coupled core group. The core interval Λ between adjacent cores included in the coupled core group is set so that at a wavelength of 1550 nm, the mode coupling coefficient between adjacent cores satisfies 2.6×100 [m-1] to 1.6×102 [m-1], or the power coupling coefficient between adjacent cores satisfies 1.3×10-3 [m-1] to 8.1×100 [m-1].