Abstract
An alternative approach is presented to minimize the impact of fiber nonlinearities in optical single-sideband systems at 10 Gb/s using electrical dispersion precompensation by adding optical postcompensation while maintaining low accumulated dispersion. Numerical simulation is used to show that the dependence of the system performance on the dispersion compensation scheme resembles a pseudolinear transmission regime, although it is not considered as such in the strictest sense. A launched power increase of 3 dB is achieved when compared to full electrically precompensated systems. A feasible implementation of the optical transmitter is considered, which imposes a maximum transmitted modulation depth. It is shown that low modulation depths result in an asymmetric optimum dispersion compensation map.
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