Abstract
We investigate electronic mitigation of linear and non-linear fibre impairments and compare various digital signal processing techniques, including electronic dispersion compensation (EDC), single-channel back-propagation (SC-BP) and back-propagation with multiple channel processing (MC-BP) in a nine-channel 112 Gb/s PM-mQAM (m=4,16) WDM system, for reaches up to 6,320 km. We show that, for a sufficiently high local dispersion, SC-BP is sufficient to provide a significant performance enhancement when compared to EDC, and is adequate to achieve BER below FEC threshold. For these conditions we report that a sampling rate of two samples per symbol is sufficient for practical SC-BP, without significant penalties.
| Original language | English |
|---|---|
| Pages (from-to) | 1815-1822 |
| Number of pages | 8 |
| Journal | IEICE Transactions on Communications |
| Volume | E94-B |
| Issue number | 7 |
| Publication status | Published - 1 Jul 2011 |
Bibliographical note
Copyright ©2008 IEICERafique, D., Zhao, J. A., & Ellis, A. D. (2011). Compensation of nonlinear fibre impairments in coherent systems employing spectrally efficient modulation formats. IEICE transactions on communications, E94-B(7), 1815-1822.
Keywords
- optical fibre communication
- coherent communication
- digital signal processing
- nonlinear optics