Automatic Selection of Fourier Transform Techniques in Free-Space Propagation Operator

Accurate and efficient simulation of free-space propagation of electromagnetic fields is essential for physical optics modeling and design. VirtualLab Fusion has a unified free-space propagation concept. It is based on the spatial-frequency domain (k-domain) analysis. In combination with different Fourier transform techniques, it delivers numerical efficient solutions for different situations of free-space propagations. The selection of appropriate Fourier transform is automatic according to the situation.