Analysis of Light Propagation in Identical and Non-Identical Multicore Photonic Crystal Fibers

Mohammed, M; Ahmad, Ahmad K.

doi:10.22401/anjs.23.3.07

Cited by 3 publications

(1 citation statement)

References 15 publications

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“…More "conventional" MOF configuration is based on stacks with inclusion of doped silica rods. According to published results of simulations and theoretical researches, increased refractive index of MOF cores improves unique properties characteristic of all-silica multi-core MOFs (in-phase supermode regime [36][37][38][39] ; band pass filtration and splitting 40,41 ) and discovers novel features (guiding systems for optical networks with using SDM technique 42,43 ; SDM channel multiplexing / demultiplexing [44][45][46][47] ). There is a set of published works [48][49][50][51][52][53][54] , concerned with Yb-doped multicore (6 48,50,51 , 7 52,54 , 12 49 , and 18 53 cores) MOFs/PCFs for high power fiber lasers, while GeO2-doped core MOFs was designed and fabricated for supercontinuum generation (3 cores) 55,56 , and for guiding systems 57 and splitters 58 for SDM fiber optic transmission system / next generation optical networks (7 cores).…”

Section: Introductionmentioning

confidence: 99%

Experimental researches and testing of silica twisted six-GeO2-doped core microstructured optical fiber. Part I: fusion splicing with telecommunication optical fibers and differential mode delay map measurements

Bourdine,

Dashkov,

Evtushenko

et al. 2023

Optical Technologies for Telecommunications 2022

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This work presents results of test series, performed for earlier on designed and successfully fabricated silica few-mode microstructured optical fibers (MOF) with six GeO2-doped cores, induced twisting 100 revolutions per meter, typical "telecommunication" outer diameter 125 µm, core diameter 8.7 µm, air hole diameter 4.6 µm, pitch 7.2 µm, and core quasi-step / graded refractive index profiles with height 0.0360 / 0.0275, respectively. Part I introduces attempts for *

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Section: Introductionmentioning

confidence: 99%

Experimental researches and testing of silica twisted six-GeO2-doped core microstructured optical fiber. Part I: fusion splicing with telecommunication optical fibers and differential mode delay map measurements

Bourdine,

Dashkov,

Evtushenko

et al. 2023

Optical Technologies for Telecommunications 2022

View full text Add to dashboard Cite

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Finite element modelling of independent core propagation in multicore photonic crystal fibres resulting from anisotropy in structure

Mohammed

Ahmad

2021

J. Phys.: Conf. Ser.

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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.

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Finite element modeling of coupling characteristics of directional coupler for multiplexer and de-multiplexer application

Mohammed

2021

J. Phys.: Conf. Ser.

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Numerical simulation of directional coupler that is based on the finite element method was conducted using the COMSOL Multiphysics software. The distributions of electric field and power flow of light propagates in two cores of directional coupler were analyzed. The results showed the dependencies of coupling length and maximum transfer power between cores on the cores separation and the wavelength, the characteristic of a subwavelength directional coupler can be used for photonic integrated circuits. Asymmetric directional coupler was also designed by changing in the device dimension, as the core width. The variation of coupling length with the core width were analysed. It was found that the power switching between cores is reduced when introducing a small difference in the one core width of directional coupler, followed by increased coupling length. At the same time, the coupling length can be decreased efficiently by increasing the difference in one core width; therefore, a directional coupler with large core width is more convenient to reduce the power switching between cores than the smaller core width. This study is useful for determining the coupling characteristics between the cores that may be used as a platform for future photonic integrated circuits in optical communication systems.

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Analysis of Light Propagation in Identical and Non-Identical Multicore Photonic Crystal Fibers

Cited by 3 publications

References 15 publications

Experimental researches and testing of silica twisted six-GeO2-doped core microstructured optical fiber. Part I: fusion splicing with telecommunication optical fibers and differential mode delay map measurements

Experimental researches and testing of silica twisted six-GeO2-doped core microstructured optical fiber. Part I: fusion splicing with telecommunication optical fibers and differential mode delay map measurements

Finite element modelling of independent core propagation in multicore photonic crystal fibres resulting from anisotropy in structure

Finite element modeling of coupling characteristics of directional coupler for multiplexer and de-multiplexer application

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