Optimizing the nonlinear operator in backward propagation
- 1 April 2011
- conference paper
- conference paper
- Published by Institute of Electrical and Electronics Engineers (IEEE) in 2011 IEEE EUROCON - International Conference on Computer as a Tool
Abstract
Backward propagation is the most effective way of performing digital post-compensation in an optical system. In this work we exploit a simple optimization procedure based on finding the optimal fraction of nonlinearities that must be compensated in order to achieve the best performance. Using a 40 Gb/s NRZ-QPSK signal, propagated over 20 × 80 km of standard single-mode fiber, we present compensation results employing nonlinear optimization and we compare its performance with non-optimized backward propagation. Finally, we analyze the impact of both temporal and space resolution on the optimum nonlinear operator and on the overall compensation performance.Keywords
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