ALL-OPTICAL SYNCHRONIZATION OF SELF-PULSATING LASER-DIODES WITH FREQUENCY MULTIPLICATION AND DIVISION

We investigate optical synchronization with frequency multiplication a nd division of self-pulsating laser diodes. Using a simple rate equati on model to describe self-pulsation we show that synchronization with frequency multiplication can be accompanied by large variations in the period of the emitted laser pulses over the injected pulse cycle. The se variations are not obvious in the frequency domain treatment of syn chronization. By applying a frequency division synchronizing signal to our model, we also show that the sensitivity of the phase difference between the inj acted signal and laser emission to power increases wit h increasing frequency division ratio and leads to the presence of pow er synchronization ranges.