计算物理 ›› 1996, Vol. 13 ›› Issue (1): 21-28.

• 论文 • 上一篇    下一篇

有限差分光束传输法的分析

杨建义, 冯浩, 王明华   

  1. 浙江大学信息与电子工程学系, 杭州 310027
  • 收稿日期:1994-05-11 修回日期:1995-09-19 出版日期:1996-03-25 发布日期:1996-03-25

ANALYSIS OF THE FINITE DIFFERENCE BEAM PROPAGATION METHOD

Yang Jianyi, Feng Hao, Wang Minghua   

  1. Dept. of Information & Electronic Engineering, Zhejiang University, Hangzhou 310027
  • Received:1994-05-11 Revised:1995-09-19 Online:1996-03-25 Published:1996-03-25

摘要: 结合辐射可透边界条件,由Maxwell方程导出了TE模和TM模的FD-BPM法基本公式,通过对数值误差引起的计算损耗和传播常数的误差分析,对算法进行了评估。

关键词: 有限差分, 光束传输法, 光波导

Abstract: A finite difference beam propagation method (FD-BPM) is analyzed and assessed for the application to two-dimensional structures.The general formulations for the FD-BPM are derived form Maxwell equations for TE mode and TM mode respectively,with the transparent boundary condition (TBC).The FD-BPM is assessed by computing the loss caused by the numerical error and the percentage error of the propagation constants of the TE and TM modes of a step-index slab waveguide.Based on this assessment,FD-BPM appears to be a good tool for the analysis and simulation of the optical waveguide devices and a exellent method for the computer-aided-design in Integrated Optoelectronics.

Key words: finite difference, beam propagation, optical waveguide

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