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Ansys Learning Forum › Forums › Discuss Simulation › Photonics › FDTD transmission fluctuation › Reply To: FDTD transmission fluctuation

July 18, 2024 at 9:02 am
Greg Baethge
Ansys Employee

Hi NAMHYEON, these oscillations are not necessarily wrong: as your substrate has a finite thickness, you basically have a Fabry-Perot cavity. You can easily check this using the STACK solver (see stackrt script command)