WDM TRANSMISSION AT 6 TBIT/S CAPACITY OVER TRANSATLANTIC DISTANCE , USING 42.7 GB/S DIFFERENTIAL PHASE-SHIFT KEYING WITHOUT PULSE CARVER

We report the transmission of a record 6 Tbit/s capacity over 6120 km distance, involving channels modulated at 42.7-Gb/s bit-rate with differential phase-shift keying (DPSK). The performance is found similar to DPSK with subsequent pulse carving, namely RZ-DPSK.