Unrepeatered Nyquist PDM-16QAM transmission over 364 km using Raman amplification and multi-channel digital back-propagation

Authors :: Conselho Nacional de Desenvolvimento Científico e Tecnológico (Brasil)
Engineering and Physical Sciences Research Council (UK)
Galdino, L.
Tan, Mingming
Lavery, D.
Rosa, Pawel
Maher, R.
Phillips, I.D.
Ania Castañón, Juan Diego
Harper, P.
Killey, R.I.
Thomsen, B.C.
Makovejs, S.
Bayvel, P.
Conselho Nacional de Desenvolvimento Científico e Tecnológico (Brasil)
Engineering and Physical Sciences Research Council (UK)
Galdino, L.
Tan, Mingming
Lavery, D.
Rosa, Pawel
Maher, R.
Phillips, I.D.
Ania Castañón, Juan Diego
Harper, P.
Killey, R.I.
Thomsen, B.C.
Makovejs, S.
Bayvel, P.
Publication Year :: 2015
Abstract: © 2015 Optical Society of America. Transmission of a net 467-Gb/s PDM-16QAM Nyquistspaced superchannel is reported with an intra-superchannel net spectral efficiency (SE) of 6.6 (b/s)/Hz, over 364-km SMF-28 ULL ultra-low loss optical fiber, enabled by bidirectional second-order Raman amplification and digital nonlinearity compensation. Multi-channel digital backpropagation (MC-DBP) was applied to compensate for nonlinear interference; an improvement of 2 dB in Q2 factor was achieved when 70-GHz DBP bandwidth was applied, allowing an increase in span length of 37 km.

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