transmission within a 50-GHz grid, and coherent detection would enable digital
postprocessing with digital signal processors (DSPs) for impairment mitigation
once the required DSPs are realized. In a first demonstration, a 10 111 Gbit/s
signal based on RZ-DQPSK and polarization multiplexing were transmitted over
2375 km of SMF and, after coherent detection, the signals were sampled by a
digital sampling oscilloscope and postprocessed on a personal computer.
5.7 OUTLOOK
The throughput in optical networks is increasing inexorably, the backhauling
traffic generated by triple-p lay and video-on-demand services being the main
drivers. Therefore, the first application for 100-Gbit/s systems for Ethernet trans-
port is expec ted in metro networks and storage-area ...