Terahertz bandpass and bandstop filter based on the babinet complementary metamaterials

Li, Guo-Ming; Sun, Tong; Li, Jian-Di; Zhao, Ting-Ting; Wang, Ying-Hua; Cao, Hong-Zhong; Ma, Ren-De; Fan, Fei; Xu, Shi-Tong

doi:10.1016/j.optcom.2024.130944

Optics Communications

2024

DOI: 10.1016/j.optcom.2024.130944

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Terahertz bandpass and bandstop filter based on the babinet complementary metamaterials

Guo-Ming Li,

Tong Sun,

Jian-Di Li

et al.

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Temperature tunable broadband filter based on hybridized vanadium dioxide (VO₂) metasurface

Wang,

Yang,

Cai

et al. 2024

J. Phys. D: Appl. Phys.

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In this paper, a novel temperature tunable terahertz (THz) broadband filter based on hybridized vanadium dioxide (VO2) metasurface (MS) was proposed. The designed MS is composed of subwavelength metallic square-grid (SG) structure situated between two layers of metallic square-patch (SP) structure integrated with VO2 film pad spaced with two layers of dielectric substrate. Utilizing the insulator-metal phase transition characterizations of VO2 in the THz regime, the operation mode of the proposed MS filter accomplishes the broadband transmission-to-reflection transition. Simulation results show that when VO2 is in the insulating state with a lower external temperature, the proposed MS behaves like a broadband filter with transparent window and a transmittance of above 80% over the frequency range of 0.66 - 1.12 THz. However, when VO2 undergoes the metallic state with a higher external temperature, the MS becomes a broadband filter with low-transmission shielding and exhibiting a transmittance of below 10% across the frequency spectrum from 0.56 THz to 1.4 THz. The physical mechanism of the proposed MS based tunable broadband filter is illustrated by introducing impedance matching theory, equivalent circuit model (ECM) and field analysis. In addition, the proposed MS structure offers exceptional angular stability and polarization insensitivity, opening up new opportunities for the utilization of energy selective surface (ESS) in THz applications.

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Temperature tunable broadband filter based on hybridized vanadium dioxide (VO₂) metasurface

Wang,

Yang,

Cai

et al. 2024

J. Phys. D: Appl. Phys.

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show abstract

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Terahertz bandpass and bandstop filter based on the babinet complementary metamaterials

Cited by 1 publication

References 46 publications

Temperature tunable broadband filter based on hybridized vanadium dioxide (VO₂) metasurface

Temperature tunable broadband filter based on hybridized vanadium dioxide (VO₂) metasurface

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Terahertz bandpass and bandstop filter based on the babinet complementary metamaterials

Cited by 1 publication

References 46 publications

Temperature tunable broadband filter based on hybridized vanadium dioxide (VO2) metasurface

Temperature tunable broadband filter based on hybridized vanadium dioxide (VO2) metasurface

Contact Info

Product

Resources

About

Temperature tunable broadband filter based on hybridized vanadium dioxide (VO₂) metasurface

Temperature tunable broadband filter based on hybridized vanadium dioxide (VO₂) metasurface