Spectrally efficient long-haul transmission of 22-Tb/s using 40-Gbaud PDM-16QAM with coherent detection
04 March 2012
We report on the transmission of 1-Tb/s clusters of channels, composed by four 50-GHz-spaced WDM channels modulated with 40-Gbaud PDM-16QAM. We transmit 22-Tb/s data over 2,400 km, with a spectral efficiency of 5 bit/s/Hz.