Experimental and numerical evaluation of inter-core differential mode delay characteristic of weakly-coupled multi-core fiber | Zendy

Taiji Sakamoto | Zendy; Takayoshi Mori | Zendy; Masaki Wada | Zendy; Takashi Yamamoto | Zendy; Takashi Matsui | Zendy; Kazuhide Nakajima | Zendy; Fumihiko Yamamoto | Zendy

Open Access

Experimental and numerical evaluation of inter-core differential mode delay characteristic of weakly-coupled multi-core fiber

Author(s) -

Taiji Sakamoto,

Takayoshi Mori,

Masaki Wada,

Takashi Yamamoto,

Takashi Matsui,

Kazuhide Nakajima,

Fumihiko Yamamoto

Publication year - 2014

Publication title -

optics express

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 1.394

H-Index - 271

ISSN - 1094-4087

DOI - 10.1364/oe.22.031966

Subject(s) - core (optical fiber) , crosstalk , optics , twist , materials science , optical fiber , physics , mathematics , geometry

We investigated the inter-core differential mode delay (DMD) characteristic of a weakly-coupled homogeneous multi-core fiber with a view to utilizing inter-core crosstalk compensation with MIMO processing. We confirmed experimentally that the bend induced inter-core DMD is lower than the simulated results, which we expected owing to the twist of the fiber. We also revealed numerically that the refractive index profile variation of each core greatly increases inter-core DMD. Finally, we conducted a 4 × 4 MIMO transmission experiment using a weakly-coupled 4-core fiber and successfully compensated for the inter-core crosstalk.

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