With complexity-reduced digital signal processing, duobinary signaling and detection are proposed for Nyquist-WDM coherent systems. Best sensitivity is experimentally demonstrated in 25GHz-grid 5×112-Gb/s PM-QPSK WDM systems
© 2012 OSA
(060.1660) Fiber optics and optical communications : Coherent communications
(060.2330) Fiber optics and optical communications : Fiber optics communications
(060.4230) Fiber optics and optical communications : Multiplexing
J. Li, E. Tipsuwannakul, M. Karlsson, and P. Andrekson, "Low-Complexity Duobinary Signaling and Detection for Sensitivity Improvement in Nyquist-WDM Coherent System," in Optical Fiber Communication Conference, OSA Technical Digest (Optical Society of America, 2012), paper OM3H.2.