DocumentCode :
3607581
Title :
Transmission of 100-Gb/s VSB DFT-Spread DMT Signal in Short-Reach Optical Communication Systems
Author :
Fan Li ; Xinying Li ; Junwen Zhang ; Jianjun Yu
Author_Institution :
ZTE TX, Morristown, NJ, USA
Volume :
7
Issue :
5
fYear :
2015
Firstpage :
1
Lastpage :
7
Abstract :
In this paper, we experimentally demonstrated transmission of a 100-Gb/s discrete Fourier transform (DFT)-spread 32-quadrature amplitude modulation (QAM) discrete multitone (DMT) signal in an intensity-modulation/direct-detection system utilizing a direct-modulated laser. We find that DFT-spread cannot only reduce the peak-to-average power ratio but also improve the robustness to high-frequency power attenuation and narrow-band interference in the high-speed short-reach optical communication systems. Vestigial sideband (VSB) enabled by a narrow-bandwidth tunable optical filter can be adopted to resist the power fading effect induced by the fiber chromatic dispersion after direct detection. The measured bit error ratio (BER) of 100-Gb/s VSB DFT-spread DMT signal after 20-km large effective area fiber is less than the hard-decision forward-error-correction (HD-FEC) limitation of3.8 ×10-3.
Keywords :
discrete Fourier transforms; optical fibre communication; optical fibre dispersion; optical filters; optical tuning; quadrature amplitude modulation; 32-quadrature amplitude modulation discrete multitone signal; DFT-spread DMT signal; Vestigial sideband; bit error ratio; bit rate 100 Gbit/s; direct-modulated laser; discrete Fourier transform; distance 20 km; fiber chromatic dispersion; hard-decision forward-error-correction limitation; high-frequency power attenuation; intensity-modulation/direct-detection system; narrow-band interference; narrow-bandwidth tunable optical filter; power fading effect; short-reach optical communication systems; transmission; Adaptive optics; Bit error rate; Optical attenuators; Optical fiber communication; Optical fibers; Peak to average power ratio; 32-quadrature amplitude modulation (QAM); 32QAM; DFT-spread; DMT; Discrete multitone (DMT); Vestigial sideband (VSB); discrete Fourier transform (DFT)-spread; vestigial sideband (VSB);
fLanguage :
English
Journal_Title :
Photonics Journal, IEEE
Publisher :
ieee
ISSN :
1943-0655
Type :
jour
DOI :
10.1109/JPHOT.2015.2486684
Filename :
7289333
Link To Document :
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