TBC and PML conditions for 2D and 3D BPM: a comparison

被引：11

作者：

Fogli, F ^{[1
]}

Bellanca, G ^{[1
]}

Bassi, P ^{[1
]}

机构：

[1] Univ Bologna, Dipartimento Elettron Informat & Sistemist, I-40136 Bologna, Italy

来源：

OPTICAL AND QUANTUM ELECTRONICS | 1998年 / 30卷 / 5-6期

关键词：

Radiation; Boundary Condition; Communication Network; Open Problem; Coupler;

D O I：

10.1023/A:1006966230354

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：

Any implementation of the beam propagation method, when used to analyse open problems, requires a procedure allowing radiation to leave the computational window. In this paper we present the results of a case study on the effectiveness of the classical Hadley's Transparent Boundary Conditions (TBC) and the Perfectly Matched Layer (PML) to handle strong radiation at the boundaries. A polished fibre coupler will be studied both in 2D and in 3D configurations using, in the former case, a scalar method and, in the latter, a full vectorial approach. Numerical results show that simple TBC can be used in 2D simulations also when high radiation occurs but they easily fail in 3D structures. Therefore, in these cases, the more complicated PML conditions should be preferred.

引用

页码：443 / 456

页数：14