Title :
Experimental demonstration of intra-channel nonlinearity mitigation in coherent QPSK systems with nonlinear electrical equaliser
Author :
Zhang, Fang ; Gao, Yuan ; Luo, Yun ; Li, Jie ; Zhu, L. ; Li, Luoqing ; Chen, Zhe ; Xu, Aixia
Author_Institution :
State Key Lab. of Adv. Opt. Commun. Syst. & Networks, Peking Univ., Beijing, China
Abstract :
The mitigation of intra-channel nonlinearities in 10 Gbaud coherent NRZ-QPSK systems via a nonlinear electrical equaliser based on Volterra theory is experimentally demonstrated. Without the requirement of prior knowledge of the fibre link, the equaliser significantly improves the system performance compared to digital dispersion compensation only.
Keywords :
Volterra equations; equalisers; quadrature phase shift keying; Volterra theory; coherent QPSK systems; fibre links; intrachannel nonlinearity mitigation; nonlinear electrical equaliser; quadrature phase shift keying;
Journal_Title :
Electronics Letters
DOI :
10.1049/el.2010.3570
