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

Abstract:

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.

• Periodical: Applied Mechanics and Materials (Volume 455)
• Pages: 167-172
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.455.167
• Online since: November 2013
• Authors: Li Shuang Feng, Bo Hao Yin, Zhen Zhou, Jia Wei Sui, Chen Long Li
• Keywords: HFSS Simulation, Metamaterial, Modulator, Terahertz

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