Open AccessChromatic dispersion compensation and fiber nonlinearity mitigation of OOK signals with diverse-VSB-filtering FFE and DFE
Author(s) -
Ming Li,
Fan Zhang,
Zhangyuan Chen,
Anshi Xu
Publication year - 2008
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.16.021991
Subject(s) - keying , amplitude shift keying , sideband , computer science , dispersion (optics) , electronic engineering , residual , optical communication , signal (programming language) , gigabit , compensation (psychology) , nonlinear system , optics , telecommunications , physics , bit error rate , phase shift keying , engineering , decoding methods , radio frequency , algorithm , psychology , programming language , quantum mechanics , psychoanalysis
We propose a diverse vestigial-sideband-filtering feed forward equalizer and decision feedback equalizer (DVSB-FFE-DFE), which is capable of compensating residual chromatic dispersion (CD) as well as mitigating fiber nonlinearity in on-off keying (OOK) systems. In DVSBFFE-DFE, the upper and the lower VSB filtered signals are jointly equalized with FFE followed by DFE. Simulation results show that in a 42.7 Gbit/s nonreturn-to-zero OOK system, DVSB-FFE-DFE can effectively mitigate the required optical signal-to-noise ratio penalty induced by residual CD and fiber nonlinearity.