1-2hit |
Hideaki HORIUCHI Shoji YAMAGUCHI Toshio HOSONO
In this paper, we developed the analytical method for the radiation field from a line current source placed in a stratified slab waveguide. This method is applicable to the analysis of excitation problem of inhomogeneous slab waveguide by increasing the number of layers. The numerical results are given for the cases of five layers, such as W and M type waveguides, and the inhomogeneous slab waveguide. The influence of guided and leaky modes on the radiation field are studied.
Yutaka SATOMURA Yoshinori MUROI
The propagation characteristics of nonlinear TE waves guided by planar optical waveguide whose guiding region has arbitrary inhomogeneous refractive-index profile are investigated theoretically by using the WKB method. The effects of inhomogeneous index profile of a guided region on the propagation characteristics such as the propagation constant and the field distribution are estimated numerically.