title: One-way transmission of linearly polarized light in plasmonic subwavelength metallic grating cascaded with dielectric grating.
abstract: We show that optical transmission of linearly polarized light through a plasmonic subwavelength metallic grating cascaded with a dielectric grating at a 45° angle to each other is asymmetric in opposite directions. A key characteristic of this asymmetric transmission is that the polarization of the transmitted light is changed. Simulation results reveal that transmission of 0.92 in one direction and 10(-5) in the opposite direction can be obtained at normal incidence at a wavelength of 1550 nm. Because of their high optical performance and loose fabrication requirements, the structures may provide practical applications in the control of light transmission.
authors.affiliation: College of Opto-Electronic Science and Engineering, National University of Defense Technology, Changsha 410073, China.
authors.forename: Z H
authors.initials: ZH
authors.lastname: Zhu
authors.forename: K
authors.initials: K
authors.lastname: Liu
authors.forename: W
authors.initials: W
authors.lastname: Xu
authors.forename: Z
authors.initials: Z
authors.lastname: Luo
authors.forename: C C
authors.initials: CC
authors.lastname: Guo
authors.forename: B
authors.initials: B
authors.lastname: Yang
authors.forename: T
authors.initials: T
authors.lastname: Ma
authors.forename: X D
authors.initials: XD
authors.lastname: Yuan
authors.forename: W M
authors.initials: WM
authors.lastname: Ye