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Long-range spoof surface plasmons on the doubly corrugated metal surfaces

机译:双波纹金属表面上的远程欺骗表面等离激元

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摘要

In this paper, symmetric spoof surface plasmon (SSP) mode on the doubly corrugated metal surfaces is indentifled as long-range spoof surface plasmon (LRSSP) because of its extreme low propagation loss and symmetric dominant field profile so as short-range SSP (SRSSP) for anti-symmetric mode. Based on theoretical calculation and numerical simulation of finite integration method, symmetric and anti symmetric SSP modes with various gap sizes between these two identical corrugated metal surfaces are investigated in terahertz (THz) regime and good agreement is realized. Besides, the low loss superiority of LRSSP diminishes along with the increased gap size. This work opens up new avenues to utilize this long-range surface mode in far-infrared, THz or lower frequency band and can find many potential applications such as low-loss waveguide, filters and novel electronic sources. (C) 2016 Elsevier B.V. All rights reserved.
机译:本文将波纹金属表面上的对称欺骗表面等离激元(SSP)模式识别为远程欺骗表面等离激元(LRSSP),因为它具有极低的传播损耗和对称的主场分布,因此被称为短距离SSP(SRSSP) )用于反对称模式。基于有限积分法的理论计算和数值模拟,研究了两个相同的波纹金属表面在太赫兹(THz)范围内具有不同间隙尺寸的对称和反对称SSP模式,并实现了良好的一致性。此外,LRSSP的低损耗优势随着间隙尺寸的增加而减弱。这项工作开辟了在远红外,太赫兹或更低频带中利用这种远程表面模式的新途径,并且可以发现许多潜在的应用,例如低损耗波导,滤波器和新型电子源。 (C)2016 Elsevier B.V.保留所有权利。

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