title: Achieving planar plasmonic subwavelength resolution using alternately arranged insulator-metal and insulator-insulator-metal composite structures.
abstract: This work develops and analyzes a planar subwavelength device with the ability of one-dimensional resolution at visible frequencies that is based on alternately arranged insulator-metal (IM) and insulator-insulator-metal (IIM) composite structures. The mechanism for the proposed device to accomplish subwavelength resolution is elucidated by analyzing the dispersion relations of the IM-IIM composite structures. Electromagnetic simulations based on the finite element method (FEM) are performed to verify that the design of the device has subwavelength resolution. The ability of subwavelength resolution of the proposed device at various visible frequencies is achieved by slightly varying the constituent materials and geometric parameters. The proposed devices have potential applications in multi-functional material, real-time super-resolution imaging, and high-density photonic components.
authors.affiliation: Research Center for Applied Sciences, Academia Sinica, Taipei 115, Taiwan.
authors.forename: Bo Han
authors.initials: BH
authors.lastname: Cheng
authors.affiliation: Department of Photonics and Advanced Optoelectronic Technology Center, National Cheng Kung University, Taiwan 70101, Taiwan.
authors.forename: Kai Jiun
authors.initials: KJ
authors.lastname: Chang
authors.affiliation: Department of Photonics and Advanced Optoelectronic Technology Center, National Cheng Kung University, Taiwan 70101, Taiwan.
authors.forename: Yung-Chiang
authors.initials: YC
authors.lastname: Lan
authors.affiliation: 1] Research Center for Applied Sciences, Academia Sinica, Taipei 115, Taiwan [2] Department of Physics, National Taiwan University, Taipei 10617, Taiwan.
authors.forename: Din Ping
authors.initials: DP
authors.lastname: Tsai