I was wondering can we put separate electrodes in different side of silicon wave guide then measure the drift current, is the any tutorial for bpm or any other solution for this matter? let me make more obvious, we have silicon wave guide let’s say splitter, I need to have light and voltage in the same time, basically in silicon the drift current is significant, I wish we could have a simulation to support both electrical and optical matters, would you please let me know what to do?