Reciprocal asymmetric transmission in self-shadowed metallized gratings
The study investigated how oblique deposition of metal onto a grating creates asymmetric transmission by breaking interface orientation symmetry. Oblique growth generates self-shadowed structures, leading to a one-sided silver redistribution. This asymmetry allows reciprocal optical structures to transmit light directionally based on coupling between diffraction channels, proving that deposition angle controls the directional response.