The following is a TCAD simulation of a high speed UTC photodetector. An I-V curve is simulated for the photodetector, forward and reverse. A light beam is simulated to enter the photodetector. The photo-current response to a light impulse is simulated, followed by a frequency response in TCAD.
Beam Simulation Entering Photodetector:
Frequency Response in ATLAS:
The full project (pdf) is here: ece530_final_mbenker