Title :
Transmission of 1 Tb/s Unique-Word DFT-Spread OFDM Superchannel Over 8000 km EDFA-Only SSMF Link
Author :
Li, An ; Chen, Xi ; Gao, Guanjun ; Shieh, William
Author_Institution :
Dept. of Electr. & Electron. Eng., Univ. of Melbourne, Melbourne, VIC, Australia
Abstract :
Conventional coherent optical orthogonal frequency-division multiplexed (CO-OFDM) system has inferior nonlinear tolerance due to high peak-to-average power ratio (PAPR). Discrete Fourier transform spread OFDM (DFTS-OFDM) has recently been proposed as a promising candidate that possesses similar spectral characteristics as conventional CO-OFDM, but has much better nonlinear tolerance. We demonstrate experimentally the transmission of 1.0 Tb/s unique-word DFTS-OFDM superchannel signal over 8000 km standard single-mode fiber with 80 km span engineering and erbium-doped fiber amplification (EDFA) using quadrature phase shift keying (QPSK) modulation, representing a record spectral efficiency and reach product in transmission systems compatible with most of the deployed links.
Keywords :
OFDM modulation; discrete Fourier transforms; erbium; optical fibre amplifiers; optical fibre communication; optical links; quadrature phase shift keying; EDFA-only SSMF link; QPSK modulation; bit rate 1 Tbit/s; coherent optical orthogonal frequency-division multiplexing; discrete Fourier transform; distance 8000 km; erbium-doped fiber amplification; nonlinear tolerance; peak-to-average power ratio; quadrature phase shift keying modulation; standard single-mode fiber; transmission systems; unique-word DFT-spread OFDM superchannel; Bit error rate; Channel estimation; Coherence; OFDM; Optical filters; Optical transmitters; Phase noise; Coherent communications; optical communications; orthogonal frequency-division multiplexing (OFDM);
Journal_Title :
Lightwave Technology, Journal of
DOI :
10.1109/JLT.2012.2206369
