Elevation-azimuth angular selectivity and angle-frequency filtering in asymmetric photonic crystal.
Asymmetric photonic crystal (APC) has been proposed and investigated, which only allows the transmission of the incidence at a certain incident plane and angle. Simulation results show that the proposed structure exhibits both azimuth- and elevation- angular selectivity within a broad waveband under p-polarized illumination. Consequently, functional devices such as angle-frequency filter operating in the visible range can be achieved by combining the azimuth-elevation-angular selectivity and frequency selectivity. Our scheme may find potential applications in communication and imaging systems.
Yadong
Y
Lu
Lianshan
L
Yan
Yinghui
Y
Guo
Yan
Y
Pan
Wei
W
Pan
Bin
B
Luo