Open AccessUnveiling nonlinear effects in dense coherent optical WDM systems with Volterra series
Author(s) -
Jacklyn D. Reis,
António Teixeira
Publication year - 2010
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.18.008660
Subject(s) - optics , wavelength division multiplexing , volterra series , phase shift keying , transmission (telecommunications) , nonlinear system , quadrature amplitude modulation , polarization mode dispersion , optical fiber , optical communication , series (stratigraphy) , physics , computer science , electronic engineering , bit error rate , telecommunications , channel (broadcasting) , engineering , wavelength , paleontology , quantum mechanics , biology
In this paper, the effect of fiber nonlinear effects on coherent optical WDM systems is investigated through numerical simulations. The analysis of the most relevant fiber nonlinear effects is made recurring to the Volterra series transfer function method, which allows us to quantify its impact on the transmission of multi-level modulated signals employing digital coherent receiver. The performance transmission is evaluated using vector analysis of the received signal's constellation where firstly we validate against split-step simulations that VSTF is suitable for optimizing coherent optical WDM transmission; then we evaluate the different contributions of the fiber nonlinear distortions imposed on the coherent optical QPSK, 8PSK and 16QAM channels by co-propagating lower data rate intensity modulated channels.