We transmit a mix of 224-Gb/s and 112-Gb/s PDM-QPSK channels at a 50-GHz spacing and 3-b/s/Hz spectral efficiency over 1200-km dispersion-managed LEAF® spans with 3 ROADMs and over 2000 km without ROADMs. Hybrid 224-Gb/s and 112-Gb/s PDM-QPSK Transmission at
50-GHz Channel Spacing over 1200-km Dispersion-
Managed LEAF Spans and 3 ROADMs
Chongjin Xie, Gregory Raybon, and Peter J. Winzer
Bell Labs, Alcatel-Lucent, 791 Holmdel-Keyport Road, Holmdel, NJ 07733, USA
Email: chongjin.xie@alcatel-lucent.com
Abstract: We transmit a mix of 224-Gb/s and 112-Gb/s PDM-QPSK channels at a 50-GHz
spacing and 3-b/s/Hz spectral efficiency over 1200-km dispersion-managed LEAF spans with 3
ROADMs and over 2000 km without ROADMs.
2011 Optical Society of America
OCIS codes: (060.2330) Fiber optics communications; (060.1660) Coherent communications; (060.40……
