Hello! Inconsistent results in the overlapping wavelength portion may be caused by differences in simulation models or parameter settings. Please check the following possible causes:
Model settings: Make sure you use the same model settings in both simulations, including material properties, boundary conditions, light sources, detectors, and other relevant heardle parameters.
Discretization parameters: Ensure that the same mesh density and discretization parameters are used in both simulations. Different grid settings can lead to inconsistent results.
Wavelength range: The choice of wavelength range may affect simulation results. Make sure your wavelength range covers the spectral range of your interest.
Numerical stability: When simulating over a wide wavelength range, smaller time steps or other numerical tricks may be required to ensure simulation stability.
Initial conditions: Check that the initial conditions are the same, including the excitation mode and the initial distribution of the fields.