title: Unidirectional optical transmission in dual-metal gratings in the absence of anisotropic and nonlinear materials.
abstract: We predict the unidirectional optical transmission in dual-metal grating structures composed of two gratings with different structures in the absence of anisotropy and nonlinearity. The zero-order unidirectional transmission is achieved. Based on the unique property and by modulating the structural parameters, the transmittance approaches to 0% and 60% in the two opposite directions, respectively.
authors: Physics School and Nanjing National Laboratory of Microstructures, Nanjing University, Nanjing 210093, China.
authors: Ji
authors: J
authors: Xu
authors: Chen
authors: C
authors: Cheng
authors: Ming
authors: M
authors: Kang
authors: Jing
authors: J
authors: Chen
authors: Zhu
authors: Z
authors: Zheng
authors: Ya-Xian
authors: YX
authors: Fan
authors: Hui-Tian
authors: HT
authors: Wang