Abstract
By placing two pairs of dielectric cubes and ferrite cuboids symmetrically on both sides of a single subwavelength aperture, we realize a magnetically tunable dual-band transmission. One transmission peak is induced by the Mie resonance of dielectric cubes, and the other one is induced by the ferromagnetic resonance of ferrite cuboids. The enhancement transmission controlled by the ferromagnetic resonance can be tuned by adjusting the applied magnetic field, which is confirmed by the experimental and simulated results. This work provides a way to realize tunable enhanced transmission through a single subwavelength aperture, which has greater potential for the tunable filters.
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