Unrepeated transmission over 253.4 km ultra low loss fiber achieving 6.95 b/s/Hz SE using EDFA-only pre-amplification.
Lídia GaldinoGabriele LigaDomaniç LaveryRobert MaherTianhua XuMasaki SatoRobert I. KilleySeb J. SavoryBenn C. ThomsenPolina BayvelPublished in: ECOC (2014)