320 Gbit/s (8 × 40 Gbit/s) WDM transmissionover 367 km with 120 km repeater spacingusing carrier-suppressed return-to-zero format

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Abstract
The authors demonstrate +11 dBm-per-channel 320 Gbit/s (8 × 40 Gbit/s) WDM transmission over a 367 km zero-dispersion-flattened transmission line with 120 km repeater spacing using a nonlinearity-tolerant carrier-suppressed return-to-zero format.