STRETCHED-PULSE OPTICAL-FIBER COMMUNICATIONS

We compare numerically long-distance propagation of two types of nonli near pulses: a stretched pulse in a fiber with alternating normal and anomalous dispersion and a soliton in a fiber with uniformly anomalous dispersion, Numerical evaluation of timing jitter and Q factor reveal s that stretched pulses can be propagated over longer distances than s olitons with the same (averaged) fiber dispersion in the presence of w eak fixed-frequency filtering. We also examine pulse-to-pulse interact ions between stretched pulses and the influence of fluctuations of the fiber dispersion.