Abstract
Enhanced-SSFM digital backpropagation (DBP) is
experimentally demonstrated and compared to conventional DBP.
A 112 Gb/s PM-QPSK signal is transmitted over a 3200 km
dispersion-unmanaged link. The intradyne coherent receiver includes
single-step digital backpropagation based on the enhancedSSFM
algorithm. In comparison, conventional DBP requires
twenty steps to achieve the same performance. An analysis of the
computational complexity and structure of the two algorithms
reveals that the overall complexity and power consumption of
DBP are reduced by a factor of 16 with respect to a conventional
implementation, while the computation time is reduced by a
factor of 20. As a result, the proposed algorithm enables a
practical and effective implementation of DBP in real-time optical
receivers, with only a moderate increase of the computational
complexity, power consumption, and latency with respect to a
simple feed-forward equalizer for dispersion compensation.
| Original language | English |
|---|---|
| Title of host publication | Proceedings of the Optical Networks Design and Modelling (ONDM) Conference |
| Number of pages | 5 |
| Publication date | 2015 |
| Publication status | Published - 2015 |
| Externally published | Yes |
| Event | 19th International Conference on Optical Networks Design & Modelling - Pisa, Italy Duration: 11 May 2015 → 14 May 2015 Conference number: 19 |
Conference
| Conference | 19th International Conference on Optical Networks Design & Modelling |
|---|---|
| Number | 19 |
| Country/Territory | Italy |
| City | Pisa |
| Period | 11/05/2015 → 14/05/2015 |
Keywords
- Fiber-optic systems
- Fiber nonlinearity
- Digital backpropagation