Coupling characteristic of micro planar lens for 2D photonic crystal waveguides

Author

Ikeda, N. ; Kawashima, H. ; Sugimoto, Y. ; Hasama, T. ; Asakawa, K. ; Ishikawa, H.

Author_Institution

AIST, Tsukuba

fYear

2007

fDate

14-18 May 2007

Firstpage

484

Lastpage

486

Abstract

We report design, fabrication, and characterization of a high refractive index micro planar lens for coupling of light to 2D photonic crystal waveguides (PhC WG) on an AlGaAs membrane. The lens reduced coupling loss by 4dB and the depth of fine Fabry-Perot fringes in a transmission spectrum by 1/10, relative to a PhC waveguide terminated by a cleaved facet. The lens not only stabilizes a coupling performance over different waveguides formed on different chips but also considerably tolerates the degree of precision required in aligning external optical components.

Keywords

aluminium compounds; gallium arsenide; microlenses; optical couplers; optical fabrication; optical materials; photonic crystals; refractive index; 2D photonic crystal waveguide couplers; AlGaAs; Fabry-Perot fringes; degree of precision; micro planar lens fabrication; refractive index; transmission spectrum; Biomembranes; Lenses; Optical coupling; Optical design; Optical device fabrication; Optical losses; Optical waveguides; Photonic crystals; Planar waveguides; Refractive index;

fLanguage

English

Publisher

ieee

Conference_Titel

Indium Phosphide & Related Materials, 2007. IPRM '07. IEEE 19th International Conference on

Conference_Location

Matsue

ISSN

1092-8669

Print_ISBN

1-4244-0875-X

Electronic_ISBN

1092-8669

Type

conf

DOI

10.1109/ICIPRM.2007.381232

Filename

4265989