Transmittance spectra of dielectric metamaterial in gigahertz region using MEEP

Abstract

Metamaterials, consisting of subwavelength structures, exhibit optical properties that are not found in nature. One application is to control how much transmittance for a specific frequency can pass through. Finite-Difference Time-Domain (FDTD) simulations for a metamaterial consisting of alternating PMMA-air or PMMA-ABS square or circle structures were implemented using the MIT Electromagnetic Equation Propagation (MEEP) package in Python. Results show that for the PMMA-air square and circle configurations, a near zero transmittance bandwidth were found on the shorter wavelengths, while for the PMMA-ABS square and circle structures, resonant frequencies were present. These were also done in varying structure sizes d. As d decreases, the near zero transmittance bandwidth and the resonant frequencies shift to shorter wavelength or higher frequencies. The first resonant frequencies of varying d were also shown to have a linear relationship.