ANALYTICAL PERFORMANCE EVALUATION OF NONRETURN-TO-ZERO TRANSMISSION-SYSTEMS OPERATING IN NORMALLY DISPERSIVE NONLINEAR FIBERS

An analytical theory for the evaluation of the performance of a nonret urn-to-zero (NRZ) transmission system operating in weakly normally dis persive nonlinear fibers is presented. Explicit expressions are given to compute an extimate of the transmission bit error rate, and those a re compared with results obtained through numerical simulations. A goo d agreement is found, both for systems having fibers with a constant d ispersion value, and for systems encompassing dispersion management te chnique.