Evaluation of Kerr Nonlinearity Mitigation based on Digital Backpropagation and Digital Coherent Superposition

Conference: Photonische Netze - 16. ITG-Fachtagung
05/07/2015 - 05/08/2015 at Leipzig, Deutschland

Proceedings: ITG-Fb. 257: Photonische Netze

Pages: 5Language: englishTyp: PDF

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Sackey, Isaac (Technische Universität Berlin and Fraunhofer Heinrich-Hertz-Institut, Berlin, Germany)
Noelle, Markus; Richter, Thomas; Fischer, Johannes K.; Schubert, Colja (Fraunhofer Heinrich-Hertz-Institut, Berlin, Germany)
Jazayerifar, Mahmoud; Petermann, Klaus (Technische Universität Berlin, Berlin, Germany)

We experimentally investigate the performance of Kerr nonlinearity mitigation by employing two different nonlinearity mitigation approaches in a 4×28-GBd single-polarization 16-QAM signal transmission system over a 400-km dispersion-compensated link. One scheme employs digital coherent superposition of phase-conjugated twin waves at the receiver whereas the other scheme is based on a digital backpropagation employing the split-step Fourier method. The results for both nonlinearity mitigation schemes are compared in the single-channel and the WDM scenario. Both schemes show significant signal quality-factor improvements compared to the signal transmission without any nonlinearity mitigation technique.