基于SRR的超材料太赫兹调制器结构设计与调制深度仿真

Structure Design and Modulation Depth Simulation of SRR-based Metamaterial Terahertz Modulator

电磁超材料可用于构建具有控制太赫兹辐射通断功能的太赫兹强度调制器。利用COMSOL仿真软件,通过模拟仿真,研究了基于开口谐振环(SRR)"工字型"超材料太赫兹调制器关键功能结构对器件透射光谱的影响规律,并以此完成了高调制深度器件的结构优化设计。仿真结果表明:优化后器件调制深度达到了74%。

Electromagnetic modulator which can control terah metamaterials can be used to construct a THz intensity ertz on or off. In this paper, the simulation analysis for key functional structures of the ＂ I-shaped＂ split ring resonator （SRR） metamaterials terahertz modulator had been completed, the THz transmission spectra were simulated by the software COMSOL, determining the parameters of functional structure which can influence the modulation depth, and thus the device structure was optimized. After optimization device modulation depth reached 74% in theory.