Non-reciprocal properties of optical reflection of a bidimensional subwavelength hole array in a metallic film

In a recent paper Altewischer et al reported experimental results related to reflection properties of a bidimensional subwavelength hole array. They underlined the non-reciprocal properties of reflection. In addition, their results take a great interest as reflection and transmission are both necessary for a complete description and understanding of optical systems. In the present paper, we investigate theoretically the device studied by Altewischer et al and show that the results of simulations corroborate the experimental results