Finite-difference beam propagation method based on the generalized Douglas scheme for a nonuniform grid

被引：15
|
作者：
Yamauchi, J
Shibayama, J
Sekiguchi, M
Nakano, H
机构：
[1] College of Engineering, Hosei University, Koganei
来源：
IEEE PHOTONICS TECHNOLOGY LETTERS | 1997年 / 9卷 / 01期
关键词：
finite-difference methods; optical propagation; optical waveguides;
D O I：
10.1109/68.554495
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：
The finite-difference beam propagation method based on the Douglas scheme is extended to a nonuniform grid, The truncation error is reduced to O(Delta x)(4), provided the grid growth factor is r = 1 + O(Delta x), while maintaining a tridiagonal matrix, The numerical results show that the accuracy is improved as compared with. that obtained from the conventional nonuniform Crank-Nicholson scheme.
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页码：67 / 69
页数：3
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