Extinction ratio calculation and control of a laser

摘要: A laser driver outputs a data protocol signal as controlled by an extinction control signal. The has header section including first sub-section having bit pattern and second which is different than the pattern. optical in response to being excited signal, with converted electrical low-pass filtered produce based on patterns. sequence of signals are convolved reference peak located, this location further used locate subsections located then measured calculate ratio accordance predetermined formula. calculated compared desired generate