Dynamically Tunable Plasmonic Dual-Band Metamaterial Absorber Utilising VO2/MoS2 for Optical Communication Frequencies

Abstract

This paper presents the design and analysis of a tunable metamaterial absorber based on the combination pattern of two-dimensional molybdenum disulfide (MoS₂) and vanadium dioxide (VO₂) resonator. The design of the absorber structure is simple and includes an array of silicon on which the pattern of MoS₂ and vanadium is placed. By using the ability to adjust the MoS₂ carrier concentration and VO₂ phase transition properties, the absorber has dual control over its optical properties through temperature and voltage settings. This design provides the possibility of dynamic control of the resonance frequencies of the absorber. The absorber structure shows 99.3% absorption at 1375.8 nm and 94.3% at 1550.9 nm. By adjusting the parameters of the absorber structure, the absorption peak at wavelengths 1545.6 and 1743 nm reached 99.4% and 95.4%, respectively. The tunability of MoS₂ and vanadium allows precise tuning of absorption peak locations and makes the structure suitable for applications such as sensors, detectors, optical filters and telecommunication devices that require precise wavelength placement.