70GHz-spaced 40x42.7Gbit/s transmission over 8700km using CS-RZ DPSK signal, all-Raman repeaters and symmetrically dispersion-managed fiber span

摘要

70GHz-spaced 40x42.7Gbit/s pre-filtered CS-RZ DPSK signals have been successfully transmitted over 8700km for the first time, using all-Raman repeaters, "ABA" dispersion map and an ETDM receiver. Long-term stability was also confirmed with low-speed polarization scrambling and without using PMD compensation.