Abstract:Higher requirements have been put forward for the performance of two-dimensional (2D) gratings, such as polarization independence, high efficiency, wide broadband and so forth. In this letter, we employ the characteristic of diffraction in the grating and propose a 2×2 2D silver cylindrical array grating under normal incidence with excellent polarizationindependent high diffraction efficiency (DE) over communication band for beam splitting. The simulation and optimization of the DE are based on rigorous couple… Show more
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