title: Plasmonic filters and optical directional couplers based on wide Metal-Insulator-Metal structure.
abstract: The wide Metal-Insulator-Metal (WMIM) structure is proposed and its characteristics are analyzed numerically using finite-difference time-domain (FDTD) method. Simulations show that power can be periodically transferred between its two Metal-Insulator (MI) interfaces while power is injected asymmetrically. Novel plasmonic filters and optical directional couplers (ODCs) based on WMIM structure are proposed, which work similarly as traditional dielectric devices. Due to the simple structures without thin metal gaps, our result may provide an alternative way to realize the fabrication of nanoscale optical devices.
authors.affiliation: Laboratory of Photonic Information Technology, School for Information and Optoelectronic Science and Engineering, South China Normal University, Guangzhou 510006, China. liangrs@scnu.edu.cn
authors.forename: Pixin
authors.initials: P
authors.lastname: Chen
authors.forename: Ruisheng
authors.initials: R
authors.lastname: Liang
authors.forename: Qiaodong
authors.initials: Q
authors.lastname: Huang
authors.forename: Zhe
authors.initials: Z
authors.lastname: Yu
authors.forename: Xingkai
authors.initials: X
authors.lastname: Xu