FDTD Note
1. Open FDTD Initial project is 3D project 2. Add Simulation Region Background index Geometry Mesh settings Boundary conditions z direction use PML x, y direction use Periodic if want to simulate tilt angle light sourse (like SA) ** we must use Bloch ** 3. Add Structure Geometry Material index Rotations 4. Add Source General Plane wave angle, direction Geometry Wavelength 5. Add Monitor Refractive index Movie Refractive index 6. loop sweep