recently I do a FDTD simulation and want to extract the optical current from the FDTD.
I use two contact metal for comparision.the picture below is the generation rate of Si.It can be easy to find that there is no optical generation in the region.However ,the optical current extracted from the generation script is 0.000125174 A.Where does the optical current come from?? I also use the PEC in the FDTD simulation and the optical current I got is 0 A. What cause this big difference?
Hope to get your feedback.Thanks a lot.Si Al.fsp (663.3 KB)
PEC Si.fsp (656.7 KB)