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Appl Opt. 2009 Sep 1;48(25):F6-10. doi: 10.1364/AO.48.0000F6.

Compensation of interchannel nonlinearities using enhanced coupled equations for digital backward propagation.

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CREOL, The College of Optics and Photonics, University of Central Florida, 4000 Central Florida Boulevard, Orlando, Florida 32816, USA.


Enhanced coupled-nonlinear equations are introduced for full compensation of cross-phase modulation and partial compensation of four-wave mixing (FWM) via split-step digital backward propagation. Compared to full FWM compensation, the new backward propagation equations provide a significant reduction in the number of steps required in the split-step method. This increased step size together with more relaxed sampling requirements reduced the computational load by more than a factor of 20.

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