Patent ID: 8761562
Filing Date: 2014-06-24
Classification: G02B

Abstract:
1. A multicore fiber in which a plurality of single mode cores are stored in one optical fiber wherein the cores are a plurality of cores including homogeneous cores having the same propagation constant and heterogeneous cores having different propagation constants or a plurality of cores including only homogeneous cores having the same propagation constant, for the homogeneous cores, a perturbation part is provided between each homogeneous core and a homogeneous core nearest to the homogeneous core, said plurality of cores are arranged with lattice points of a lattice-point arrangement as reference positions and said perturbation part is arranged at a position shifted from the reference positions, and said perturbation part, located near homogeneous cores, gives different perturbations to propagation constants of the homogeneous cores to allow the propagation constants to have different values by varying the propagation constants of the homogeneous cores from original propagation constants by different amounts and, thereby, decreases coupling between the homogeneous cores.