Abstract

Employing time-domain hybrid QAM, training-assisted phase recovery and cascaded equalization, we successfully transmitted ten 494.85Gbit/s PDM-32/64QAM DWDM signals at 8.25b/s/Hz net spectral efficiency (SE) over 40x100km, achieving a record terrestrial SE.distance product of 33,000- km.b/s/Hz.

© 2012 OSA

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