title: Numerical study on a micro prism and micro lenses with metal-dielectric multilayered structures.
abstract: A micro optical prism and micro lenses with metal-and-dielectric multilayered subwavelength structure (MDMS) are discussed. The MDMS prism has a highly dispersive optical property. Light waves do not spread out in the small prism because of the restriction of propagation direction of light. Optical properties of a curved MDMS prism were investigated by theoretical analysis and numerical simulations. The curved MDMS prism with a structure period of 0.4 microm and an apex angle of 90 degrees had angular dispersion of 0.11 degrees /nm for light of 1.5 microm wavelength. A convexo-plane MDMS lens and a gradient-index MDMS lens were also investigated, and the optical behavior for the curved prism with the convexo-plane lens was demonstrated by a numerical simulation.
authors.affiliation: School of Engineering, Osaka Prefecture University, 1-1 Gakuen-cho, Naka-ku, Sakai, Osaka, Japan. ds101001@edu.osakafu-u.ac.jp
authors.forename: Shinji
authors.initials: S
authors.lastname: Kameda
authors.forename: Akio
authors.initials: A
authors.lastname: Mizutani
authors.forename: Hisao
authors.initials: H
authors.lastname: Kikuta