COMSOL MULTIPHYSICS software based on the finite element method is being
used to simulate the random anisotropy in diameters of the cores formed in multicore photonic
crystal fibre structures, and this may affect the coupling properties between the cores’ modes.
Consequently, this leads to a reduction in the coupling efficiency between the cores with
different structures. This anisotropy in diameters of the cores leads to the creation of a small
mismatch between the modes of these cores and is sufficient to inhibit coupling. The coupling
properties are affected hugely depending on the amount of the change in core diameter and
increasing the number of cores coupled inside the multicore structure. We also found an
improvement in the coupling efficiency when increasing the number of cores within the
structure of the multicore photonic crystal fibres; otherwise, the independent light propagation
of each core inside the multicore structure, with/without a little penetration with other adjacent
cores. As the coupling efficiency of seven-core coupled is better than three-core, and the latter
may be better than two-core in which the cores appear decoupled and independent in their
propagated for the adjacent other cores. It can be considered this study a novel characteristic of
multiplexing-demultiplexing applications.
Publication Date
12/1/2021
Publisher
Journal of Physics: Conference Series, IOP Publishing
ا.م .د. ميامي عبد اللطيف محمد | Asst. Prof. Dr. Miami Abdulatteef Mohammad | 4575