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

Lidia Galdino*, Mingming Tan, Domaniç Lavery, Pawel Rosa, Robert Maher, Ian D. Phillips, Juan D. Ania Castañón, Paul Harper, Robert I. Killey, Benn C. Thomsen, Sergejs Makovejs, Polina Bayvel

*Corresponding author for this work

Research output: Contribution to journalLetter, comment or opinion

Abstract

Transmission of a net 467-Gb/s PDM-16QAM Nyquist-spaced 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 bi-directional second-order Raman amplification and digital nonlinearity compensation. Multi-channel digital back-propagation (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.
Original languageEnglish
Pages (from-to)3025-3028
Number of pages3
JournalOptics Letters
Volume40
Issue number13
Early online date1 Jun 2015
DOIs
Publication statusPublished - 19 Jun 2015

Bibliographical note

Funding: EPSRC (EP/J017582/1).

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