Design and Simulation of a Polarization-Independent Active Metamaterial Terahertz Modulator

作者：Li Shuang Feng, Bo Yin, Zhen Zhou, Jia Wei Sui, Chen Long Li · 发表于：Applied Mechanics and Materials · 年份：2013 · DOI：10.4028/www.scientific.net/amm.455.167 · 被引用次数：1 · 研究领域：Metamaterials and Metasurfaces Applications、Terahertz technology and applications、Millimeter-Wave Propagation and Modeling

The design and simulation of a polarization-independent active metamaterial terahertz modulator is presented in this work. The device incorporates an array of gold triple SRRs on an n-doped gallium arsenide layer to create an active metamaterial terahertz modulator with a high modulation depth, a high modulation speed and an especial polarization-independent performance for use in terahertz communication, imaging and sense.We established the theoretical model and simulatedthe key performances of the device with Ansoft HFSS.The results showed that the device exhibits a polarization-insensitivebehavior with a maximum amplitude modulation depth of 71% and a modulation rate of3.2Mbps at the resonance frequency of0.86 THz.