Kuloglu Mustafa, Lee Robert
ElectroScience Laboratory, Department of Electrical and Computer Engineering, The Ohio State University, Columbus, Ohio 43212, USA.
J Opt Soc Am A Opt Image Sci Vis. 2012 Jul 1;29(7):1399-406. doi: 10.1364/JOSAA.29.001399.
A new hybrid finite-element/rigorous coupled wave analysis formulation is presented for the modeling of electromagnetic wave interactions with doubly periodic structures. The structures under investigation are periodic in two dimensions and have a finite extent in the third dimension. The proposed model can handle structures that have material properties varying arbitrarily in any of the dimensions within the unit cell. Employment of Fourier series expansion and Floquet's theory in one of the periodic dimensions helps to reduce the dimension of the mesh. Results obtained from alternative methods are used to verify the proposed method's validity.
提出了一种新的混合有限元/严格耦合波分析公式，用于模拟电磁波与双周期结构的相互作用。所研究的结构在二维上是周期性的，在第三维上具有有限的范围。该模型可以处理在晶胞内任何维度上材料特性任意变化的结构。在其中一个周期维度上采用傅里叶级数展开和弗洛凯理论有助于降低网格的维度。用其他方法得到的结果来验证所提方法的有效性。
