Abstract
In this paper, a tunable, two-dimensional periodic structure based on guided-mode resonance (GMR) is proposed. This element can be employed as a tunable optical filter or a display pixel. Resonance tuning in this device is accomplished through perturbation in the refractive index profile and element's thickness, conceptually by a micro-electro-mechanical system mechanism. Simulation results show that resonance wavelength tunings of ∼48 nm (522-570nm) and ∼17 nm (526-543nm) are achieved by physical movement of 166nm horizontally and 300nm vertically, respectively. The proposed device can fairly maintain its tunability under ±5° deviations in the angle of incidence.
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