I am using FDTD Lumerical. In the example https://kb.lumerical.com/en/pic_photodetectors_vertical_photodetector.html
The source intensity in the analysis of “Generation_rate” is 6.66667E10.
I want to know how to get the source intensity, because the source intensity is important when calculation responsivity.
Another question is that when I change the geometry of WG or PD, does the source intensity change? If yes. How do I get the source intensity?
Thank you very much.