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Published in: Optical and Quantum Electronics 5/2019

01-05-2019

Topological plasmonic modes in graphene-coated nanowire arrays

Authors: Peng Meng, Dong Zhao, Dong Zhong, Weiwei Liu

Published in: Optical and Quantum Electronics | Issue 5/2019

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Abstract

We investigate the topological edge modes of surface plasmonic polaritons (SPPs) in a two-dimensional waveguide array composed of graphene-coated nanowires. The system experiences topological phase transition by tuning the inter-layer spacing between adjacent unit cells. The topological modes emerge at the edge of topological non-trivial nanowire arrays when the intra-layer spacing is larger than the inter-layer spacing. Thanks to the strong confinement of graphene SPPs, the modal wavelength of topological edge modes can be squeezed as small as 1/20 of incident wavelength. The study provides a promising approach to realizing robust light transport beyond diffraction limit.

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Metadata
Title
Topological plasmonic modes in graphene-coated nanowire arrays
Authors
Peng Meng
Dong Zhao
Dong Zhong
Weiwei Liu
Publication date
01-05-2019
Publisher
Springer US
Published in
Optical and Quantum Electronics / Issue 5/2019
Print ISSN: 0306-8919
Electronic ISSN: 1572-817X
DOI
https://doi.org/10.1007/s11082-019-1867-z

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