Excitation of anti-symmetric coupled spoof SPPs in 3D SIS waveguides based on coupling  

作　　者：田莉莉 陈杨 刘建龙 郭凯 周可雅 高扬 刘树田 

机构地区：[1]Department of Physics, Harbin Institute of Technology, Harbin 150001, China [2]School of Electrical Enginnering & Information, Northeast Petroleum University, Daqing 163318, China [3]College of Electronic Engineering, Heilongjiang University, Harbin 150080, China

出　　处：《Chinese Physics B》2016年第7期538-541,共4页中国物理B（英文版）

基　　金：Project supported by the National Basic Research Program of China(Grant No.2013CBA01702);the National Natural Science Foundation of China(Grant Nos.61377016,61575055,10974039,61307072,61308017,and 61405056)

摘　　要：According to the electromagnetic field distributions, there exist two kinds of coupled spoof surface plasmon polaritons（SSPPs）, the symmetric and anti-symmetric modes, in the three-dimensional（3D） subwavelength spoof–insulator–spoof（SIS） waveguide. We study the dispersion and excitation of the two kinds of coupled SSPPs supported by the 3D SIS waveguide. The evolution of the dispersion with the thickness and gap width of the waveguide is numerically investigated,and we give a theoretical analysis according to the coupling mechanism. Specially, based on the coupling mechanism,we design a zipper structure, through which the excitation and propagation of the anti-symmetric coupled modes can be realized effectively.According to the electromagnetic field distributions, there exist two kinds of coupled spoof surface plasmon polaritons（SSPPs）, the symmetric and anti-symmetric modes, in the three-dimensional（3D） subwavelength spoof–insulator–spoof（SIS） waveguide. We study the dispersion and excitation of the two kinds of coupled SSPPs supported by the 3D SIS waveguide. The evolution of the dispersion with the thickness and gap width of the waveguide is numerically investigated,and we give a theoretical analysis according to the coupling mechanism. Specially, based on the coupling mechanism,we design a zipper structure, through which the excitation and propagation of the anti-symmetric coupled modes can be realized effectively.

关 键 词：waveguides surface plasmons microwave technology 

分 类 号：TN25[电子电信—物理电子学]