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A combination of Dirichlet to Neumann operators and perfectly matched layers as boundary conditions for optical finite element simulations

机译:Dirichlet与Neumann算子的组合和完美匹配的层作为光学有限元模拟的边界条件

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摘要

By combining Dirichlet to Neumann (DtN) operators and Perfectly Matched Layers (PML’s) as boundary conditions on a rectangular domain on which the Helmholtz equation is solved, the disadvantages of both methods are greatly diminished. Due to the DtN operators, light may be accurately fluxed into the domain, while the PML’s absorb light that is reflected from the corners of the domain when only DtN boundaries are used.
机译:通过将Dirichlet到Neumann(DtN)算子和完全匹配层(PML)作为边界条件组合在一起,在矩形域上解决了Helmholtz方程,这两种方法的缺点都大大减少了。由于DtN运算符的作用,光可能会精确地入射到域中,而仅使用DtN边界时,PML会吸收从域的角反射的光。

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