Ansys Learning Forum › Forums › Discuss Simulation › Photonics › FDTD status is 1 with Bloch boundary condition › Reply To: FDTD status is 1 with Bloch boundary condition
September 20, 2023 at 5:06 pm
Guilin Sun
Ansys Employee
Please try normal incidence and find the diffraction orders and angles with periodic BCs. If the diffraction orders change from one wavelength to another, there will be wavelengths that have 90 deg diffraction.