The FDTD method is a state-of-the-art technique for solving Maxwell’s equations in complex geometries.
The Lumerical FDTD manual is proprietary. You cannot legally download it from third-party file-sharing sites. Here is the legitimate workflow: Lumerical Fdtd Manual Pdf
Even with the PDF open, users make mistakes. The FDTD method is a state-of-the-art technique for
This is the heart of the manual. It details every simulation object available in the software. If you are trying to understand the difference between a "Mode Source" and a "Total-Field Scattered-Field (TFSF)" source, this is where you look. It explains: Lumerical Fdtd Manual Pdf