Soliton-based return-to-zero transmission over transoceanic distances by periodic dispersion compensation

The accumulation of Gordon–Haus jitter can be effectively suppressed by the use of periodic dispersion compensation and in-line optical filters. The feasibility of 20-Gbit/s soliton-based transoceanic systems has been confirmed through 1000-km loop transmission experiments and 8100-km straight-line transmission experiments that employed periodic dispersion compensation. For a 20-Gbit/s, 9000-km transmission system, a Q2 of 19 dB, a sufficient power window of 2.5 dB, and robustness to repeater output power reduction have been demonstrated, as has compatibility with the conventional supervision scheme. A dramatic increase in system capacity can be expected from soliton wavelength-division multiplexing with periodic compensation of dispersion and its slope.

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