Numerical simulation of terahertz transmission of bilayer metallic meshes with different thickness of substrates

Gaohui Zhang; Guozhong Zhao; Shengbo Zhang

doi:10.1117/12.1000237

5 December 2012 Numerical simulation of terahertz transmission of bilayer metallic meshes with different thickness of substrates

Gaohui Zhang, Guozhong Zhao, Shengbo Zhang

Author Affiliations +

Proceedings Volume 8562, Infrared, Millimeter-Wave, and Terahertz Technologies II; 85621G (2012) https://doi.org/10.1117/12.1000237
Event: Photonics Asia, 2012, Beijing, China

Abstract

The terahertz transmission characteristics of bilayer metallic meshes are studied based on the finite difference time domain method. The bilayer well-shaped grid, the array of complementary square metallic pill and the cross wire-hole array were investigated. The results show that the bilayer well-shaped grid achieves a high-pass of filter function, while the bilayer array of complementary square metallic pill achieves a low-pass of filter function, the bilayer cross wire-hole array achieves a band-pass of filter function. Between two metallic microstructures, the medium need to be deposited. Obviously, medium thicknesses have an influence on the terahertz transmission characteristics of metallic microstructures. Simulation results show that with increasing the thicknesses of the medium the cut-off frequency of high-pass filter and low-pass filter move to low frequency. But the bilayer cross wire-hole array possesses two transmission peaks which display competition effect.

Citation Download Citation

Gaohui Zhang, Guozhong Zhao, and Shengbo Zhang "Numerical simulation of terahertz transmission of bilayer metallic meshes with different thickness of substrates", Proc. SPIE 8562, Infrared, Millimeter-Wave, and Terahertz Technologies II, 85621G (5 December 2012); https://doi.org/10.1117/12.1000237

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