Tunable waveguide bends with graphene-based anisotropic metamaterials

Zhao-xian Chen; Ze-guo Chen; Ming-yang Li; Ying Wu; Yan-qing Lu

doi:10.7567/APEX.9.025101

Tunable waveguide bends with graphene-based anisotropic metamaterials

Zhao-xian Chen, Ze-guo Chen, Ming-yang Li, Ying Wu, Yan-qing Lu

Research output: Contribution to journal › Article › peer-review

3 Scopus citations

Abstract

We design tunable waveguide bends filled with graphene-based anisotropic metamaterials to achieve a nearly perfect bending effect. The anisotropic properties of the metamaterials can be described by the effective medium theory. The nearly perfect bending effect is demonstrated by finite element simulations of various structures with different bending curvatures and shapes. This effect is attributed to zero effective permittivity along the direction of propagation and matched effective impedance at the interfaces between the bending part and the dielectric waveguides. We envisage that the design will be applicable in the far-infrared and terahertz frequency ranges owing to the tunable dielectric responses of graphene.

Original language	English (US)
Pages (from-to)	025101
Journal	Applied Physics Express
Volume	9
Issue number	2
DOIs	https://doi.org/10.7567/APEX.9.025101
State	Published - Jan 15 2016

Bibliographical note

KAUST Repository Item: Exported on 2020-10-01
Acknowledgements: The work described in this paper was supported by King Abdullah University of Science and Technology (KAUST), the National Science Foundation of China (NSFC) under contact No. 61225026, and the Program for Changjiang Scholars and Innovative Research Teams at the University under contract IRT13021.

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10.7567/APEX.9.025101

https://repository.kaust.edu.sa/bitstream/10754/597121/1/Tunable%20waveguide%20bends%20with%20GBAM_APEX_final%20submission.pdf

Cite this

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title = "Tunable waveguide bends with graphene-based anisotropic metamaterials",

abstract = "We design tunable waveguide bends filled with graphene-based anisotropic metamaterials to achieve a nearly perfect bending effect. The anisotropic properties of the metamaterials can be described by the effective medium theory. The nearly perfect bending effect is demonstrated by finite element simulations of various structures with different bending curvatures and shapes. This effect is attributed to zero effective permittivity along the direction of propagation and matched effective impedance at the interfaces between the bending part and the dielectric waveguides. We envisage that the design will be applicable in the far-infrared and terahertz frequency ranges owing to the tunable dielectric responses of graphene.",

author = "Zhao-xian Chen and Ze-guo Chen and Ming-yang Li and Ying Wu and Yan-qing Lu",

note = "KAUST Repository Item: Exported on 2020-10-01 Acknowledgements: The work described in this paper was supported by King Abdullah University of Science and Technology (KAUST), the National Science Foundation of China (NSFC) under contact No. 61225026, and the Program for Changjiang Scholars and Innovative Research Teams at the University under contract IRT13021.",

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AU - Chen, Ze-guo

AU - Li, Ming-yang

AU - Wu, Ying

AU - Lu, Yan-qing

N1 - KAUST Repository Item: Exported on 2020-10-01 Acknowledgements: The work described in this paper was supported by King Abdullah University of Science and Technology (KAUST), the National Science Foundation of China (NSFC) under contact No. 61225026, and the Program for Changjiang Scholars and Innovative Research Teams at the University under contract IRT13021.

PY - 2016/1/15

Y1 - 2016/1/15

N2 - We design tunable waveguide bends filled with graphene-based anisotropic metamaterials to achieve a nearly perfect bending effect. The anisotropic properties of the metamaterials can be described by the effective medium theory. The nearly perfect bending effect is demonstrated by finite element simulations of various structures with different bending curvatures and shapes. This effect is attributed to zero effective permittivity along the direction of propagation and matched effective impedance at the interfaces between the bending part and the dielectric waveguides. We envisage that the design will be applicable in the far-infrared and terahertz frequency ranges owing to the tunable dielectric responses of graphene.

AB - We design tunable waveguide bends filled with graphene-based anisotropic metamaterials to achieve a nearly perfect bending effect. The anisotropic properties of the metamaterials can be described by the effective medium theory. The nearly perfect bending effect is demonstrated by finite element simulations of various structures with different bending curvatures and shapes. This effect is attributed to zero effective permittivity along the direction of propagation and matched effective impedance at the interfaces between the bending part and the dielectric waveguides. We envisage that the design will be applicable in the far-infrared and terahertz frequency ranges owing to the tunable dielectric responses of graphene.

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Tunable waveguide bends with graphene-based anisotropic metamaterials

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