Performance analysis of the delay and exclusive-OR type clock recovery circuit in an APD-based optical receiver

A general analysis is provided to evaluate the timing jitter performance of a delay and exclusive-OR type clock recovery circuit in an APD-based optical receiver. The contributions of the pattern noise and the jittery bit transitions owing to the finite slope of the received optical pulses in the presence of receiver noise to the timing jitter of the recovered clock are quantitatively assessed for various receiver parameters