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

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.