Title :
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
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;
Conference_Titel :
Indium Phosphide & Related Materials, 2007. IPRM '07. IEEE 19th International Conference on
Conference_Location :
Matsue
Print_ISBN :
1-4244-0875-X
Electronic_ISBN :
1092-8669
DOI :
10.1109/ICIPRM.2007.381232
