4.7 Article

Near-Zero Modal-Dispersion (NEMO) Coupled-Core Multi-Core Fibers

期刊

JOURNAL OF LIGHTWAVE TECHNOLOGY
卷 39, 期 23, 页码 7517-7528

出版社

IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/JLT.2021.3115912

关键词

Couplings; Propagation constant; Multicore processing; Optical fiber dispersion; Perturbation methods; Optical fibers; Optical fiber communication; Space-division multiplexing; modal dispersion; optical fiber communication; MIMO systems

资金

  1. Italian Government through project Innovating City Planning through Information Communication Technologies (INCIPICT)
  2. PRIN 2017 project Fiber Infrastructure for Research on Space-Division Multiplexed Transmission (FIRST)

向作者/读者索取更多资源

The proposed design for coupled-core multi-core fibers aims to achieve extremely low levels of modal dispersion – coined as NEMO fibers. This design sacrifices some fiber mode-mixing effectiveness in exchange for reducing nonlinear signal distortions. A semi-analytical tool developed in this study effectively characterizes the impact of various perturbations on the ideal fiber structure.
Wepropose a design for coupled-core multi-core fibers that allows to achieve extremely low levels of modal dispersion. These fibers, which we dub NEar-zero MOdal-dispersion (NEMO) fibers, have an even number of cores regularly distributed on a circle, and the optimal design parameters follow from a simple condition independent of the number of cores. The modal-dispersion reduction trades off some of the fiber mode-mixing effectiveness, yet without compromising its beneficial property of mitigating nonlinear signal distortions. The semi-analytical tool developed for this study allows to effectively characterize the effect of various types of perturbations to the ideal fiber structure.

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