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Influence of Spatial Dispersion on Propagation Properties of Waveguides Based on Hyperbolic Metamaterial

In this work, we study the effect of spatial dispersion on propagation properties of planar waveguides with the core layer formed by hyperbolic metamaterial (HMM). In our case, the influence of spatial dispersion was controlled by changing the unit cell’s dimensions. Our analysis revealed a number o...

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Autores principales: Janaszek, Bartosz, Tyszka-Zawadzka, Anna, Szczepański, Paweł
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2021
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8624703/
https://www.ncbi.nlm.nih.gov/pubmed/34832285
http://dx.doi.org/10.3390/ma14226885
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author Janaszek, Bartosz
Tyszka-Zawadzka, Anna
Szczepański, Paweł
author_facet Janaszek, Bartosz
Tyszka-Zawadzka, Anna
Szczepański, Paweł
author_sort Janaszek, Bartosz
collection PubMed
description In this work, we study the effect of spatial dispersion on propagation properties of planar waveguides with the core layer formed by hyperbolic metamaterial (HMM). In our case, the influence of spatial dispersion was controlled by changing the unit cell’s dimensions. Our analysis revealed a number of new effects arising in the considered waveguides, which cannot be predicted with the help of local approximation, including mode degeneration (existence of additional branch of TE and TM high-β modes), power flow inversion, propagation gap, and plasmonic-like modes characterized with long distance propagation. Additionally, for the first time we reported unusual characteristic points appearing for the high-β TM mode of each order corresponding to a single waveguide width for which power flow tends to zero and mode stopping occurs.
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spelling pubmed-86247032021-11-27 Influence of Spatial Dispersion on Propagation Properties of Waveguides Based on Hyperbolic Metamaterial Janaszek, Bartosz Tyszka-Zawadzka, Anna Szczepański, Paweł Materials (Basel) Article In this work, we study the effect of spatial dispersion on propagation properties of planar waveguides with the core layer formed by hyperbolic metamaterial (HMM). In our case, the influence of spatial dispersion was controlled by changing the unit cell’s dimensions. Our analysis revealed a number of new effects arising in the considered waveguides, which cannot be predicted with the help of local approximation, including mode degeneration (existence of additional branch of TE and TM high-β modes), power flow inversion, propagation gap, and plasmonic-like modes characterized with long distance propagation. Additionally, for the first time we reported unusual characteristic points appearing for the high-β TM mode of each order corresponding to a single waveguide width for which power flow tends to zero and mode stopping occurs. MDPI 2021-11-15 /pmc/articles/PMC8624703/ /pubmed/34832285 http://dx.doi.org/10.3390/ma14226885 Text en © 2021 by the authors. https://creativecommons.org/licenses/by/4.0/Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Janaszek, Bartosz
Tyszka-Zawadzka, Anna
Szczepański, Paweł
Influence of Spatial Dispersion on Propagation Properties of Waveguides Based on Hyperbolic Metamaterial
title Influence of Spatial Dispersion on Propagation Properties of Waveguides Based on Hyperbolic Metamaterial
title_full Influence of Spatial Dispersion on Propagation Properties of Waveguides Based on Hyperbolic Metamaterial
title_fullStr Influence of Spatial Dispersion on Propagation Properties of Waveguides Based on Hyperbolic Metamaterial
title_full_unstemmed Influence of Spatial Dispersion on Propagation Properties of Waveguides Based on Hyperbolic Metamaterial
title_short Influence of Spatial Dispersion on Propagation Properties of Waveguides Based on Hyperbolic Metamaterial
title_sort influence of spatial dispersion on propagation properties of waveguides based on hyperbolic metamaterial
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8624703/
https://www.ncbi.nlm.nih.gov/pubmed/34832285
http://dx.doi.org/10.3390/ma14226885
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