Abstract
A low-truncation-error scheme for a step-index profile is applied to analysis of a three-dimensional waveguide with the aid of the alternating-direction implicit method. The propagation constants of a single and a coupled rib waveguide are analyzed by use of the imaginary distance procedure. A fast convergence rate, which is not obtainable with the conventional second-order schemes, is realized, leading to highly accurate evaluation of the coupling length. A reduction in discretization error is also demonstrated in the beam-propagation analysis of a tilted rib-waveguide coupler.
© 2000 Optical Society of America
Full Article | PDF ArticleMore Like This
Yih-Peng Chiou and Hung-chun Chang
Opt. Lett. 22(13) 949-951 (1997)
Lizhong Sun and Gar Lam Yip
Opt. Lett. 18(15) 1229-1231 (1993)
Byoung-Sung Kim, Youngchul Chung, and Sun-Ho Kim
Opt. Lett. 25(8) 530-532 (2000)