Abstract

Employing time-domain hybrid QAM and electrical and optical shaping, we successfully transmitted five 504Gbits/s PDM-32/64QAM DWDM signals at 8.4b/s/Hz net spectral efficiency (SE) over a record 12×100km reach (for WDM SE>4b/s/Hz) and one 50GHz-grid ROADM.

© 2012 Optical Society of America

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