Title :
Investigation of Coherent Optical Multiband DFT-S OFDM in Long Haul Transmission
Author :
Li, Cai ; Yang, Qi ; Jiang, Tao ; He, Zhixue ; Luo, Ming ; Li, Chao ; Xiao, Xiao ; Xue, Daojun ; Yi, Xingwen ; Yu, Shaohua
Author_Institution :
State Key Lab. of Opt. Commun. Technol. & Networks, Wuhan, China
Abstract :
Multiband discrete Fourier transform spread (DFT-S) is a promising technology to reduce peak-to-average power ratio and mitigate the fiber nonlinearity. We investigate DFT-S coherent optical orthogonal frequency division multiplexing (CO-OFDM) in terms of computational complexity and nonlinearity. With the nonlinearity improvement, 450-Gb/s two-band DFT-S CO-OFDM outperforms conventional CO-OFDM, and is successfully transmitted over a 9280-km fiber link.
Keywords :
OFDM modulation; discrete Fourier transforms; optical links; optical modulation; DFT-S CO-OFDM; bit rate 450 Gbit/s; coherent optical multiband DFT-S OFDM; coherent optical orthogonal frequency division multiplexing; computational complexity; fiber link; fiber nonlinearity mitigation; long haul transmission; multiband discrete Fourier transform spread; peak-to-average power ratio; Computational complexity; Nonlinear optics; Optical modulation; Optical polarization; Peak to average power ratio; Phase shift keying; Coherent optical orthogonal frequency division multiplexing (CO-OFDM); discrete Fourier transform spread (DFT-S);
Journal_Title :
Photonics Technology Letters, IEEE
DOI :
10.1109/LPT.2012.2212882
