How to use the waveguide apodization option of the TWLM Interconnect Element?
Dear Ansys/Lumerical team,
The TWLM Element, in INTERCONNECT from Lumerical, has an option to add apodization to the grating for a DFB laser (Waveguide/Apodization Properties). Along with a couple of predefined apodization functions, it also offers the option of implementing a custom apodization function.
My question are:
-How do I interpret the predefined functions (along with the apodization parameter); meaning, how do these functions actually change the grating and can I visualize this new grating profile? (If I find a favorable configuration, I will need to translate this to a mask design.)
-If I were to go for a custom apodization function, I would need to define this custom function in a *.dat file which has to be imported into the element, right? Do you have an example on the format of such a file? (Say for example for a symmetric linear profile: grating strength maximum at both facets and linearly declining towards the center of the cavity.)
Dick van den Goor (student)