Timing-jitter reduction for a dispersion-managed soliton system: experimental evidence

Abstract

We have measured the timing jitter for dispersion-managed solitons in a recirculating loop for distances up to 20,000 km. The data were obtained with modulated data, $2^7-1$ and $2^{23}-1$ pseudorandom binary sequence patterns, at $10-\mathrm{Gbit}/\mathrm{s}$ rates and with an unmodulated pulse train at 10 GHz. We have obtained good agreement with our data, using a filtered Gordon–Haus model for the timing jitter reduced by the energy enhancement of our solitons relative to solitons in a fiber with a constant dispersion equal to our map's path-average dispersion. We have also measured a bit-error rate of $<{10}^{-9}$ at a distance of 15,000 km.