仿金属-介质-金属结构平面集成THz等离激元器件研究

项目名称： 仿金属-介质-金属结构平面集成THz等离激元器件研究

项目编号： No.61307129

项目类型： 青年科学基金项目

立项/批准年度： 2014

项目学科： 无线电电子学、电信技术

项目作者： 周永金

作者单位： 上海大学

项目金额： 28万元

中文摘要： 与太赫兹(THz)源和探测技术在小型化、集成化方面的快速发展相比，平面集成THz功能器件研究相对缓慢。基于表面等离激元能够实现平面集成THz等离激元（plasmonic）器件,但目前提出的器件存在以下问题：横向电尺寸较大；高性能复杂功能器件较少；耦合效率较低。本项目拟通过研究有限厚度仿金属-介质-金属（MDM）结构平面集成THz等离激元器件来突破以上局限。首先采用全波仿真、数值拟合和实验验证相结合的方法研究有限厚度仿MDM结构的工作机理，给出其电磁特性随频率和结构几何参数变化的基本规律；接着基于上述研究并结合光波段和微波段已有研究成果设计横向电尺寸更小的THz等离激元器件，包括分束器和定向耦合器；然后设计高性能的滤波器，并通过组合分束器和滤波器实现高性能的分波器；同时采用有限厚度平行板波导作为高效激励进行实验验证。本项目为THz集成电路的发展奠定基础，从而促进THz科技应用的发展。

中文关键词： 表面等离激元；超颖材料；太赫兹；表面等离激元学；金属-介质-金属

英文摘要： Compared with rapid developments in miniaturization and integration of Terahertz(THz) source and detecting technologies, study on planar integrated THz functional components is slow.Planar integrated THz plasmonic functional componets can be achieved based on surface plasmons(SPs). However, there are still some limitations to those proposed components: their electrical lateral sizes are large, complex functional componets with high performance are lacking and experimental verifications are insufficient. Planar integrated THz plasmonic components based on spoof metal-dielectric-metal(MDM) structures with finite thickness will be studied to break above limitations.Firstly, the underground mechanisms for these structures will be discussed by combining full-wave electromagnetic simulations, numerical fitting and experimental verifications and their electromagnetic characteristics, varing with frequencies and their geometry parameters, will be given. Then novel THz plasmonic components with smaller electrical lateral sizes will be designed based on above studies and achievements in optical and microwave fields, including power splitters and directional couplers.Next, filters will be studied and wavelength splitters with high performance will be proposed by combing power splitters and filters.Simultaneously, experime

英文关键词： surface plasmons；metamaterials；terahertz；plasmonics；metal-dielectric-metal