光学学报, 2002, 22 (4): 410, 网络出版: 2006-08-08
色散媒质中的理想匹配层吸收边界及其误差分析
Perfectly Matched Layer Absorbing Boundary in Dispersive Materials and Performance Analysis
时域有限差分法 理想匹配层吸收边界 色散媒质 误差分析 finite-difference time-domain method perfectly matched layer absorbing boundery condit dispersive material error analysis
摘要
根据色散媒质的性质及电磁波在两不同媒质交界面上反射的机理,证明并分析了在理想匹配层吸收边界中引入色散可实现有效吸收入射到吸收边界上的电磁波,从而达到减少时域有限差分法计算区域和计算误差的目的.
Abstract
Based upon properties of dispersive material and theory of electromagnetic wave reflection on the interface of two materials, it is found that material dicontinuity is the cause of the invalidation of the general perfectly matched layer absorbing boundary conditions (PML ABCs) in dispersive materials. The effectiveness of dispersive perfectly matched layer absorbing boundary conditions is proved numerically, which helps to reduce computing spatial domain and calculation error of the finite difference time domain (FDTD) method.
陈明阳, 于荣金. 色散媒质中的理想匹配层吸收边界及其误差分析[J]. 光学学报, 2002, 22(4): 410. 陈明阳, 于荣金. Perfectly Matched Layer Absorbing Boundary in Dispersive Materials and Performance Analysis[J]. Acta Optica Sinica, 2002, 22(4): 410.
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