Optica Applicata 2017(Vol.47), No.2, pp. 175-182


Enlarging the bandwidth of a two-dimensional photonic crystal mirror in the visible range
Ivan Voznyuk, Salim Boutami, Alain Glière

Keywords
diffraction gratings, subwavelength structures, resonators

Abstract
The spectral properties of reflective mirrors based on a classic design of two-dimensional subwavelength photonic crystal are investigated numerically in the visible wavelength range. These reflectors are meant to be made of silica and silicon nitride. A novel numerical strategy is proposed in order to determine the optimal value of the grating fill factor yielding an efficient level of reflectance through the maximal range of wavelengths.


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