Eigenmode analysis of optical waveguides by a Yee-mesh-based imaginary-distance propagation method for an arbitrary dielectric interface

被引:23
作者
Ando, T [1 ]
Nakayama, H [1 ]
Numata, S [1 ]
Yamauchi, J [1 ]
Nakano, H [1 ]
机构
[1] Hosei Univ, Fac Engn, Koganei, Tokyo 1848584, Japan
关键词
dielectric waveguides; electromagnetic fields; finite-difference methods; Maxwell equations; numerical analysis; optical waveguides;
D O I
10.1109/JLT.2002.800360
中图分类号
TM [电工技术]; TN [电子技术、通信技术];
学科分类号
0808 ; 0809 ;
摘要
A modified finite-difference (FD) formula for an arbitrary dielectric interface is applied to an imaginary-distance propagation method based on Yee's mesh. To confirm the validity of the modified method, we first analyze the eigenmode of a step-index circular fiber. A reduction in a discretization error is demonstrated in the evaluation of the field profile. Calculations of the normalized propagation constant show that the convergence rate of the modified FD formula is faster than that of traditional techniques and is comparable to that of a body-of-revolution technique. As a further application, we analyze the eigenmodes of sloped-side rib guides. These data agree well with previously published data.
引用
收藏
页码:1627 / 1634
页数:8
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