%0 Generic %A Galdino, L %A Liga, G %A Lavery, D %A Maher, R %A Xu, T %A Savory, SJ %A Sato, M %A Killey, R %A Thomsen, B %A Bayvel, P %C Cannes, France %D 2014 %F discovery:1454129 %I IEEE %K Bandwidth, Optical fiber networks, Wavelength division multiplexing, Bit error rate, Optical fiber polarization, Optical fiber filters, Erbium-doped fiber amplifiers, backpropagation, erbium, optical fibre amplifiers, optical fibre networks, quadrature amplitude modulation, telecommunication computing, unrepeated transmission, ultralow-loss fiber, EDFA-only pre-amplification, Nyquist-spaced PDM-16QAM, superchannel, spectral efficiency, SMF-28 ULL fiber, full-field nonlinear back-propagation, SE-distance product, bit rate 560 Gbit/s, distance 253.4 km, Er %P 5.2-5.2 %T Unrepeatered Transmission Over 253.4 km Ultra Low Loss Fibre Achieving 6.95 (b/s)/Hz Se Using EDFA-Only Pre-Amplifier %U https://discovery.ucl.ac.uk/id/eprint/1454129/ %V 2014 %X A 560 Gb/s (7×80 Gb/s Nyquist spaced PDM-16QAM) superchannel achieving 6.95 b/s/Hz spectral efficiency is transmitted over 253.4 km SMF-28® ULL fiber using only EDFA pre-amplification and full-field nonlinear back-propagation, corresponding to a record SE-distance product of 1761.1 b/s/Hz·km. %Z This version is the author accepted manuscript. For information on re-use, please refer to the publisher’s terms and conditions.