A new regular hexagonal THz wave modulator based on metamaterials and vanadium oxide phase-change materials

Jinhua Jin; Wei Wang; Zhe Chen; Zhenhua Du; Zhaoxiang Guo

doi:10.1117/12.2501197

9 November 2018 A new regular hexagonal THz wave modulator based on metamaterials and vanadium oxide phase-change materials

Jinhua Jin, Wei Wang, Zhe Chen, Zhenhua Du, Zhaoxiang Guo

Author Affiliations +

Proceedings Volume 10826, Infrared, Millimeter-Wave, and Terahertz Technologies V; 108261B (2018) https://doi.org/10.1117/12.2501197
Event: SPIE/COS Photonics Asia, 2018, Beijing, China

Abstract

In this paper, a novel terahertz modulator using the phase transition characteristics of vanadium dioxide to achieve both band-pass and band-stop filter states is proposed. The regular hexagonal split-ring is used as a unit structure, and the center frequency can be changed by changing the size of the regular hexagon. The simulation results show that any frequency between 0.1~1THz can be used as its center frequency. In the case of 140 um regular hexagon cell, the band-pass filter state shows that the -3dB bandwidth reaches to 100 GHz, and the band-stop filter state shows that the -20dB bandwidth reaches to 75 GHz. Furthermore, a mirror-type regular hexagonal structure is designed as unit cell, which can improve the modulator performance in both states.

Citation Download Citation

Jinhua Jin, Wei Wang, Zhe Chen, Zhenhua Du, and Zhaoxiang Guo "A new regular hexagonal THz wave modulator based on metamaterials and vanadium oxide phase-change materials", Proc. SPIE 10826, Infrared, Millimeter-Wave, and Terahertz Technologies V, 108261B (9 November 2018); https://doi.org/10.1117/12.2501197

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