Optimizing the Quality Factor for the Metal-Assisted Guided Mode Resonance Based Two-Dimensional Structures Through Fill-Factor Modulation

In this work, we study and numerically analyze two-dimensional metal assisted guided mode resonance (MAGMR) based hexagonal and square periodic structures. The effect of fill-factor variation on the quality factor of the resonance response generated through these structures during sensing has been investigated. It has been found that for both the periodicities, the quality factor, in general, increases with an increase in the fill-factor. Furthermore, for the considered design parameters, the quality factor of the transverse-electric (TE) like resonance modes is shown to be more closely dependent on the fill-factor than the transverse-magnetic (TM) like resonance modes.