For the Imported Source, even though one can set a frequency range in the Frequency/Wavelength tab in the Edit Imported Source window, the imported source profile is only correct at the center frequency. All other frequencies will use the same source profile imported.
Broadband Imported source simulation approach
The Imported Source can only have a source profile imported for a single frequency at a time. If source profile as a function of frequency is important, users can choose to run multiple single-frequency simulations. In each simulation, users will then have to import the source profile for each frequency accordingly.
Custom source profile from an equation:
Users will have to run the script with a frequency point and the modified equations to import a source profile for each frequency, one at a time.
Custom source profile from a monitor data:
If the monitor data is broadband, users can make use of the pinch command to pick the data for each frequency before importing to the imported source for the following simulations.
Alternatively, users can add multiple frequency monitors to the original simulation. Each monitor will then be responsible for a single frequency data. After the first simulation is run, source profiles for “multi-frequencies” will then be ready for the following simulations.