Title :
Experimental Study of the Intra-Channel Nonlinearity Influence on Single-Band 100G Coherent Optical OFDM Systems
Author :
Qunbi Zhuge ; Xian Xu ; Mousa-Pasandi, M. Esmaeel ; Morsy-Osman, Mohamed ; Chagnon, Mathieu ; El-Sahn, Ziad A. ; Plant, David V.
Author_Institution :
Dept. of Electr. & Comput. Eng., McGill Univ., Montreal, QC, Canada
Abstract :
We report on an experimental investigation of the intra-channel nonlinearity effects in single-band 100G coherent optical orthogonal frequency division multiplexing (CO)-OFDM systems. We first show that instead of using traditional single-polarization training symbols (TS´s), which suffer from nonlinearity-induced nonuniform phase shifts, correlated dual-polarization TS´s should be used in reduced-guard-interval CO-OFDM systems with short symbol durations. Next, we demonstrate that the intra-channel nonlinearity tolerance in CO-OFDM systems can be improved by employing fewer subcarriers for signal generation.
Keywords :
OFDM modulation; nonlinear optics; optical fibre communication; optical fibre polarisation; TS; bit rate 100 Gbit/s; correlated dual-polarization training symbols; intrachannel nonlinearity tolerance; reduced-guard-interval CO-OFDM systems; short symbol durations; signal generation; single-band coherent optical OFDM systems; single-band coherent optical orthogonal frequency division multiplexing; subcarriers; Channel estimation; OFDM; Optical fiber dispersion; Optical fibers; Optical receivers; Q factor; Channel estimation; fiber nonlinearity; orthogonal frequency-division multiplexing (OFDM);
Journal_Title :
Photonics Technology Letters, IEEE
DOI :
10.1109/LPT.2013.2243722
