Complete tunneling through the surface mode in a metal-insulator-metal waveguide

被引：2

作者：

Park, Junghyun ^{[1
]}

Kim, Kyoung-Youm ^{[2
]}

Lee, Il-Min ^{[3
]}

Lee, Byoungho ^{[4
,5
]}

机构：

[1] Stanford Univ, Geballe Lab Adv Mat, Stanford, CA 94305 USA

[2] Sejong Univ, Dept Opt Engn, Seoul 143747, South Korea

[3] Elect & Telecommun Res Inst, THz Photon Creat Res Ctr, Taejon 305700, South Korea

[4] Seoul Natl Univ, Natl Creat Res Ctr Act Plasmon Applicat Syst, Interuniv Semicond Res Ctr, Seoul 151744, South Korea

[5] Seoul Natl Univ, Sch Elect Engn, Seoul 151744, South Korea

来源：

JOURNAL OF THE KOREAN PHYSICAL SOCIETY | 2015年 / 66卷 / 06期

基金：

新加坡国家研究基金会;

关键词：

Optical waveguides; Surface plasmons; Resonant tunneling; Optical filters; NEGATIVE REFRACTIVE-INDEX; PLASMON-POLARITON; METAMATERIAL; TRANSMISSION; FREQUENCIES;

D O I：

10.3938/jkps.66.929

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We report a novel phenomenon of complete tunneling based on amplification of an evanescent field through the surface plasmon mode in a metal-insulator-metal waveguide. Two different types of cutoff barriers, which are obtained by low-index and doubly-negative materials, are cascaded in such a way that the evanescently decaying and growing fields can compensate for each other, resulting in near-unity transmission. This phenomenon is different from previous resonant tunneling based on the longitudinal resonance in a propagating region sandwiched between two partially-reflecting mirrors. The numerical simulation results are in good agreement with the theoretical prediction. The effect of the length of each cut-off barrier on the transmission coefficient is also presented.

引用

下载

页码：929 / 934

页数：6

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