Light Transmission Through Two Dimensional Magneto-Optical Slit Array

In this paper, metallic behavior of magneto optic materials in slit arrays under the incident of TM wave is analyzed by mode matching technique and confirmed by full wave simulations. It is shown that tensor electric permittivity of such materials under a static magnetic field bias can result in negative effective permittivity and if placed in a periodic two dimensional structure known as slit array, results in extraordinary optical transmission. It is also shown that this structure acts as a highly frequency selective surface tunable with magnetic bias change.