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Performance Optimization of Nyquist Signaling for Spectrally-Efficient Optical Access Networks

Shahpari, A. ; Reis, J.D. ; Ferreira, RMF ; Neves, D. ; Lima, M. J. N. ; Teixeira, A.

Journal of Optical Communications and Networking Vol. 7, Nº 2, pp. A200 - A208, February, 2015.

ISSN (print): 1943-0620
ISSN (online): 1943-0620

Journal Impact Factor: 1,128 (in 2010)

Digital Object Identifier: 10.1364/JOCN.7.00A200

Abstract
In this work, Nyquist pulse shaping technology is exploited for future implementations of optical access networks. The paper firstly presents technical issues regarding digital implementation of Nyquist spectral shaping for low symbol rate systems. Secondly, the potential benefits regarding mitigation of crosstalk (linear and nonlinear) of Nyquist
pulse shaping in symmetric and bi-directional wavelengthdivision multiplexing passive optical networks (WDM-PON)
are presented. Lastly, the paper proposes a WDM-PON solution employing self-coherent detection at the optical network unit (ONU) and heterodyne coherent detection at the optical line terminal (OLT). In this proposed architecture, a multiobjective optimization strategy is developed to enhance the transmission performance of the Nyquist shaped bands in full-duplex mode.