Guiding Terahertz Waves by a Single Row of Periodic Holes on a Planar Metal Surface |
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| Authors: | Linfang Shen Xudong Chen Xufeng Zhang Krishna Agarwal |
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| Affiliation: | (1) Department of Information Science and Electronic Engineering, Zhejiang University, Hangzhou, Zhejiang Province, 310027, People’s Republic of China;(2) Department of Electrical and Computer Engineering, National University of Singapore, Singapore, 117576, Singapore |
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| Abstract: | In this paper, we show that surface plasmon polaritons (SPPs) can be sustained by a single row of holes periodically drilled on a perfect electric conductor surface. These SPPs can be strongly confined in the transverse plane and they possess an excellent modal shape. In the terahertz regime, large propagation length is available for highly confined SPPs on a real-metal surface waveguide. As the dispersion characteristics of such SPPs can be controlled by the surface geometry, unusual total reflection phenomenon occurs when waves travel along a nonuniform surface waveguide with gradually increasing hole depths. |
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