Nonlinear Effects Compensation Analysis for Dual Polarization 16QAM Optical Coherent Systems

Victor E. S. Parahyba, Eduardo S. Rosa, Júlio C. M. Diniz, Vitor B. Ribeiro, Júlio C. R. F. Oliveira

DOI: 10.14209/sbrt.2012.200

Evento: XXX Simpósio Brasileiro de Telecomunicações (SBrT2012)

Keywords: Nonlinear Effects Compensation Dual Polarization 16QAM Digital signal processing Optical Coherent Systems

Abstract

High order modulation nonlinear effects has been appointed as the main limitation in coherent optical fiber transmission. Digital back-propagation algorithms are one of the current studied methods to cope with such impairment and extend the systems maximum reach. In this article, we analyzed the digital back-propagation performance in a 224 Gb/s dual polarization 16QAM optical coherent system. It was observed a 35% increase in maximum reached distance and an OSNR gain of 2.6 dB. In order to reduce the huge required computational complexity, an modified back-propagation algorithm is analyzed.

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