| 旋转体时域有限差分法的另一推导方法和单向波方程吸收边界条件 |
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| 引用本文： | 王建永,李庆武,赵长青.旋转体时域有限差分法的另一推导方法和单向波方程吸收边界条件[J].光子学报,2007,36(1):148-151. |
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| 作者姓名： | 王建永 李庆武 赵长青 |
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| 作者单位： | 1. 河海大学数理部,常州,213022
2. 河海大学计算机与信息工程学院,常州,213022 |
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| 基金项目： | 河海大学校科研和教改项目 |
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| 摘 要： | 提出了旋转体时域有限差分法的另一推导方法.基于这一方法,推导了旋转体电磁波的波动方程,进一步得出了旋转体时域有限差分法的单向波方程吸收边界条件.数值实验证实了该吸收边界条件的正确性.
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| 关 键 词： | 旋转体时域有限差分法（BOR FDTD） 单向波方程 亚波长 衍射光学元件 |
| 文章编号： | 1004-4213(2007)01-0148-4 |
| 收稿时间： | 2005-10-12 |
| 修稿时间： | 2005-10-12 |
Another Deductive Procedure and One-way Wave Equation Absorbing Boundary Condition of BOR FDTD |
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| WANG Jian-yong,LI Qing-wu,ZHAO Chang-qing.Another Deductive Procedure and One-way Wave Equation Absorbing Boundary Condition of BOR FDTD[J].Acta Photonica Sinica,2007,36(1):148-151. |
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| Authors: | WANG Jian-yong LI Qing-wu ZHAO Chang-qing |
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| Institution: | 1. Department of Mathematics and Physics, Hohai University ,Changzhou 213022 ,China2.College of Computer and Information Engineering, Hohai University ,Changzhou 213022 ,China |
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| Abstract: | Body-of-revolution finite-difference time-domain(BOR FDTD) method can model the interaction between light and axially symmetric subwavelength diffractive optical elements accurately and efficiently.Another deductive procedure of BOR FDTD is presented.Based on the procedure,the wave equation and one-way wave equation absorbing boundary condition are deduced.The validity of the absorbing boundary condition is verified by numerical experiments. |
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| Keywords: | Body-of-revolution finite-difference time-domain(BOR FDTD) One-way wave equation Subwavelength Diffractive optical element |
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