Title :
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
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;
Conference_Titel :
Numerical Simulation of Optoelectronic Devices, 2009. NUSOD 2009. 9th International Conference on
Conference_Location :
Gwangju
Print_ISBN :
978-1-4244-4180-8
DOI :
10.1109/NUSOD.2009.5297206
