Abstract
The tunable graphene-based short band absorber has been numerically examined in this article. The absorption response of the proposed design has been analyzed with the variations of chemical potential, the radius of the resonator, width of the resonator, height of silver (Ag) resonator and the height of silica substrate. The proposed structure provides narrow band absorption and wideband response over an infrared wavelength of 1.5-1.6 mu m. It has been reported that abortion amplitude was up to 99%. Metamaterial behavior was analyzed by the calculation of permittivity, permeability and refractive index. We have also investigated the absorption and reflectance response of 2 x 2 and 3 x 3 array-based structures. Comparative analysis with the previously published article is also represented. Thanks to its tunability, efficiency, and self-alignment, the proposed absorber can find application as a compact high-contrast filter in infrared optical systems. This research work can also apply to the different research filed of designing sensors, polarisers, modulators, and many more.