Metal-slit array fresnel-lens for optical coupling

Author

Jung, Young Jin ; Park, Dongwon ; Yu, Sunkyu ; Koo, Sukmo ; Yu, Hyungsuk ; Han, Sanghun ; Park, Namkyoo ; Kim, Jae Hun ; Jhon, Young Min ; Lee, Seok

Author_Institution

Appl. Photonic Syst. Lab., Seoul Nati´´l Univ., Seoul, South Korea

fYear

2009

fDate

14-17 Sept. 2009

Firstpage

97

Lastpage

98

Abstract

We proposed, for the first time, to utilize metal-slits array Fresnel lens for the optical coupling form free space into silicon slab waveguide while overcoming near focal length limit of the conventional dielectric Fresnel lens. Physical limits of the conventional Fresnel lens were revealed and it was proposed to employ metal-slit array to overcome these limitations. Comparative study has been carried out with a FDTD simulation between normal Fresnel lens coupling and metal-slit array Fresnel lens coupling.

Keywords

finite difference time-domain analysis; integrated optics; lenses; optical arrays; optical couplers; FDTD simulation; dielectric Fresnel lens; focal length limit; metal-slit array; optical coupling; silicon slab waveguide; Coupling circuits; Dielectrics; Lenses; Optical arrays; Optical coupling; Optical waveguides; Photonic crystals; Plasmons; Silicon; Slabs;

fLanguage

English

Publisher

ieee

Conference_Titel

Numerical Simulation of Optoelectronic Devices, 2009. NUSOD 2009. 9th International Conference on

Conference_Location

Gwangju

Print_ISBN

978-1-4244-4180-8

Type

conf

DOI

10.1109/NUSOD.2009.5297206

Filename

5297206