Unrepeatered 115.6 Gbit/s per channel WDM DP-QPSK transmission with novel URFL based amplification is demonstrated. Transmission of 1.4 Tb/s was possible in 350 km link and 2.2 Tb/s was achieved in 325 km without employing ROPA or speciality fibres.
© 2014 Optical Society of America
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