We propose a novel pre-equalized quadrature duobinary encoding scheme for bandwidth limited optical coherent system. 5×256-Gb/s (64-Gbaud) PDM-QPSK transmission in 50-GHz grid is experimentally demonstrated over 3120-km SSMF and EDFA-only link, achieving a net SE-distance product of 12923-bit/s/Hz-km.

© 2019 The Author(s)

PDF Article


You do not have subscription access to this journal. Citation lists with outbound citation links are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
Login to access OSA Member Subscription