Glide symmetry for mode control and significant suppression of coupling in dual-strip SSPP transmission lines

作     者：Xiao Tian Yan Wenxuan Tang Jun Feng Liu Meng Wang Xin Xin Gao Tie Jun Cui 

作者机构：Southeast UniversitySchool of Information Science and EngineeringState Key Laboratory of Millimeter WavesNanjingChina Southeast UniversityInstitute of Electromagnetic SpaceNanjingChina 

出 版 物：《Advanced Photonics》 (先进光子学（英文）)

年 卷 期：2021年第3卷第2期

页      面：68-77页

核心收录：

学科分类：0810[工学-信息与通信工程] 08[工学] 080501[工学-材料物理与化学] 0805[工学-材料科学与工程（可授工学、理学学位）] 081001[工学-通信与信息系统] 0702[理学-物理学] 

基　　金：This work was supported in part from the National Natural Science Foundation of China under Grant Nos.61631007 and 61971134,in part from the 111 Project under Grant No.111-2-05 in part from the Fundamental Research Funds for the Central Universities under Grant No.2242020R40079.Xiao Tian Yan and Wenxuan Tang contributed equally to this work 

主　　题：glide symmetry spoof surface plasmon polaritons dispersion control mode degeneracy coupling suppression 

摘      要：Glide symmetry,which is one kind of higher symmetry,is introduced in a special type of plasmonic metamaterial,the transmission lines(TLs)of spoof surface plasmon polaritons(SSPPs),in order to control the dispersion characteristics and modal fields of the *** show that the glide-symmetric TL presents merged pass bands and mode degeneracy,which lead to broad working bandwidth and extremely low coupling between neighboring ***-conductor SSPP TLs with and without glide symmetry are arranged in parallel as two channels with very deep subwavelength separation(e.g.,λ0∕100 at 5 GHz)for the application of integrated circuits and *** coupling between the hybrid channels is analyzed using coupled mode theory and characterized in terms of scattering parameters and near-field *** demonstrate theoretically and experimentally that the hybrid TL array obtains significantly more suppressed crosstalk than the uniform array of two nonglide symmetric ***,it is concluded that the glide symmetry can be adopted to flexibly design the propagation of SSPPs and benefit the development of highly compact plasmonic circuits.