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 language | English |
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Pages (from-to) | 3025-3028 |
Number of pages | 3 |
Journal | Optics Letters |
Volume | 40 |
Issue number | 13 |
Early online date | 1 Jun 2015 |
DOIs | |
Publication status | Published - 19 Jun 2015 |