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Various Nonlinearity Mitigation Techniques Employing Optical and Electronic Approaches

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2 Author(s)
Rafique, D. ; Electr. & Electron. Eng., Univ. Coll. Cork, Cork, Ireland ; Ellis, Andrew D.

In this letter, we directly compare digital back-propagation (DBP) with spectral inversion (SI) both with and without symmetry correction via dispersive chirping, and numerically demonstrate that predispersed SI outperforms traditional SI, and approaches the performance of computationally exhaustive ideal DBP. Furthermore, we propose for the first time a novel practical scheme employing predispersed SI to compensate the bulk of channel nonlinearities, and DBP to accommodate the residual penalties due to varying SI location, with predispersed SI ubiquitously employed along the transmission link with <;0.5-dB penalty. Our results also show that predispersed SI enables partial compensation of cross-phase modulation effects, increasing the transmission reach by ×2.

Published in:

Photonics Technology Letters, IEEE  (Volume:23 ,  Issue: 23 )

Date of Publication:

Dec.1, 2011

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