典型文献
Topological edge states at singular points in non-Hermitian plasmonic systems
文献摘要：
We introduce non-Hermitian plasmonic waveguide-cavity systems with topological edge states(TESs)at singular points.The compound unit cells of the structures consist of metal-dielectric-metal(MDM)stub resonators side-coupled to an MDM waveguide.We show that we can realize both a TES and an exceptional point at the same frequency when a proper amount of loss is introduced into a finite three-unit-cell structure.We also show that the finite structure can exhibit both a TES and a spectral singularity when a proper amount of gain is introduced into the structure.In addition,we show that we can simultaneously realize a unidirectional spectral singularity and a TES when proper amounts of loss and gain are introduced into the structure.We finally show that this singularity leads to extremely high sensitivity of the reflected light intensity to variations of the refractive index of the active materials in the structure.TESs at singular points could potentially contribute to the development of singularity-based plasmonic devices with enhanced performance.
文献关键词：
中图分类号：
作者姓名：
YIN HUANG;YUECHENG SHEN;GEORGIOS VERONIS
作者机构：
Department of Optoelectrics Information Science and Engineering,School of Physics and Electronics,Central South University,Changsha 410012,China;State Key Laboratory of Optoelectronic Materials and Technologies,School of Electronics and Information Technology,Sun Yat-sen University,Guangzhou 510275,China;School of Electrical Engineering and Computer Science,Louisiana State University,Baton Rouge,Louisiana 70803,USA;Center for Computation and Technology,Louisiana State University,Baton Rouge,Louisiana 70803,USA
文献出处：
引用格式：
[1]YIN HUANG;YUECHENG SHEN;GEORGIOS VERONIS-.Topological edge states at singular points in non-Hermitian plasmonic systems)[J].光子学研究（英文）,2022(03):747-757
A类：
TESs
B类：
Topological,edge,states,points,Hermitian,plasmonic,systems,We,waveguide,cavity,topological,compound,unit,cells,structures,consist,metal,dielectric,MDM,stub,resonators,side,coupled,show,that,we,can,realize,both,exceptional,same,frequency,when,proper,loss,introduced,into,finite,three,also,exhibit,spectral,singularity,gain,In,addition,simultaneously,unidirectional,amounts,are,finally,this,leads,extremely,high,sensitivity,reflected,light,intensity,variations,refractive,materials,could,potentially,contribute,development,devices,enhanced,performance
AB值：
0.448487
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