An opto-electronic device configured as a photodetector has a capacitor and/or
resistor monolithically formed on a surface of the photodetector. The capacitor
capacitively couples the AC ground of the photodetector to the bias terminal of
the photodetector. The on chip capacitor design eliminates the inductance of external
circuit traces between the power supply and an external capacitor. The resistor
forces the AC return current of the photodetector through the AC ground in preference
to the typical (DC bias terminal) path. Combinations of capacitors and resistors
are particularly effective in reducing crosstalk among adjacent detectors in arrays.
