Design of vanadium dioxide-based terahertz tunable filters

Yide Sun; Wei Wang

doi:10.1117/12.2686678

6 August 2023 Design of vanadium dioxide-based terahertz tunable filters

Yide Sun, Wei Wang

Proceedings Volume 12781, International Conference on Optoelectronic Information and Functional Materials (OIFM 2023); 127811V (2023) https://doi.org/10.1117/12.2686678
Event: 2023 International Conference on Optoelectronic Information and Functional Materials (OIFM 2023), 2023, Guangzhou, JS, China

Abstract

In this paper, a terahertz tunable filter based on vanadium dioxide with a H-type structure is designed. The dielectric layer of the filter is quartz glass and the metal layer is composed of aluminum and vanadium dioxide. Using the phase transition characteristic of VO₂, the single band and double band of filter can be switched. When VO₂ is the insulating phase, the filter is in single-pass state with a transmission rate of 0.97 and a -3dB bandwidth of 1.71THz; when VO₂ is the metallic phase, the filter is in double-pass state, the transmission rate of both passbands reaches above 0.8, and the -3dB bandwidth at the center frequency is 0.89THz and 1.17THz respectively.

Citation Download Citation

Yide Sun and Wei Wang "Design of vanadium dioxide-based terahertz tunable filters", Proc. SPIE 12781, International Conference on Optoelectronic Information and Functional Materials (OIFM 2023), 127811V (6 August 2023); https://doi.org/10.1117/12.2686678

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KEYWORDS

Tunable filters

Vanadium

Metals

Bandpass filters

Dielectric filters

Dielectrics

Electric fields

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