Abstract
We study the linewidth and the frequency jitter of the photonic microwave signals generated using the period-one (P1) dynamics from an optically injected semiconductor laser. In the optical injection system, we demonstrate that the linewidth and the frequency jitter of the microwave signal can be reduced at the specifi c operating points. The improvement in the microwave signals is due to the improvement of the linewidth and the frequency jitter in the optically injected semiconductor laser. Locking between the master laser and the slave laser also reduces the jittering of the microwave signals generated. In this study, we also show that the linewidth and the frequency jitter of the photonic microwave can also be decreased by adding optical feedback or polarization rotated feedback to the optically injected semiconductor laser. The further reduction in the linewidth and the frequency jitter of the microwave signal is due to the reduction of the linewidth and the frequency jitter of the optically injected semiconductor laser when optical feedback or polarization rotated feedback is added.