Title :
3-D semivectorial analysis to calculate facet reflectivities of semiconductor optical waveguides based on the bi-directional method of line BPM (MoL-BPM)
Author :
Kawano, Kenji ; Kitoh, Tsutomu ; Kohtoku, Masaki ; Takeshita, Tatsuya ; Hasumi, Yuji
Author_Institution :
NTT Opto-Electron. Labs., Kanagawa, Japan
Abstract :
Direct three-dimensional (3-D) calculation of the facet reflectivities to the air of semiconductor strip-loaded and buried optical waveguides is reported. The analytical procedure is based on the semivectorial bi-directional method of line BPM (MoL-BPM). The results indicate that widely utilized two-dimensional (2-D) analytical methods cannot be applied to semiconductor waveguides that have cores with small aspect ratios, and that strip-loaded and buried optical waveguides behave very differently as regards their ridge and core widths. The radiation losses at facet reflections are also clarified.
Keywords :
optical losses; optical waveguide theory; optical waveguides; reflectivity; vectors; 3D calculation; 3D semivectorial analysis; analytical procedure; bi-directional method of line BPM; buried optical waveguides; core widths; facet reflections; facet reflectivities; radiation losses; ridge widths; semiconductor optical waveguides; semiconductor strip-loaded optical waveguides; semiconductor waveguides; semivectorial bi-directional method of line BPM; small aspect ratio cores; strip-loaded optical waveguides; Bidirectional control; Optical devices; Optical losses; Optical reflection; Optical refraction; Optical variables control; Optical waveguides; Reflectivity; Semiconductor waveguides; Stimulated emission;
Journal_Title :
Photonics Technology Letters, IEEE
