DocumentCode :
5833
Title :
Fiber-Nonlinearity-Tolerant Superchannel Transmission via Nonlinear Noise Squeezing and Generalized Phase-Conjugated Twin Waves
Author :
Xiang Liu ; Chandrasekhar, S. ; Winzer, P.J. ; Tkach, R.W. ; Chraplyvy, A.R.
Author_Institution :
Bell Labs., Alcatel-Lucent, Holmdel, NJ, USA
Volume :
32
Issue :
4
fYear :
2014
fDate :
Feb.15, 2014
Firstpage :
766
Lastpage :
775
Abstract :
We present fiber-nonlinearity-tolerant transmission of polarization-division multiplexed binary phase-shift keying (PDM-BPSK) through a nonlinear noise squeezing (NLNS) effect that is achieved by optimized digital electronic dispersion precompensation. With the improved nonlinear tolerance, a 406.6-Gb/s superchannel consisting of eight 37.5-GHz-spaced 32-Gbaud Nyquist-filtered PDM-BPSK signals is transmitted over a 12800-km (160 × 80-km) EDFA-only amplified dispersion-unmanaged nonzero-dispersion-shifted fiber link. We establish a connection between the beneficial NLNS effect and the recently reported phase-conjugated twin wave (PCTW) concept and further generalize the PCTW concept to vector twin waves that are traveling through a fiber link along orthogonal dimensions such as time and space. Moreover, we apply the PCTW concept to wavelength-division-multiplexed (WDM) superchannel transmission by treating the entire WDM superchannel as a twin wave to further mitigate interchannel nonlinear effects. Through numerical simulations, we show that the generalized PCTW technique can effectively mitigate interchannel nonlinear impairments, in addition to mitigating intrachannel nonlinear impairments.
Keywords :
channel spacing; erbium; numerical analysis; optical fibre amplifiers; optical fibre dispersion; optical fibre networks; optical fibre polarisation; optical information processing; optical links; optical noise; optical phase conjugation; phase shift keying; wavelength division multiplexing; EDFA-only amplified dispersion-unmanaged nonzero-dispersion-shifted fiber link; NLNS effect; Nyquist-filtered PDM-BPSK signals; PCTW; WDM; bit rate 406.6 Gbit/s; distance 12800 km; fiber-nonlinearity-tolerant superchannel transmission; frequency 37.5 GHz; generalized phase-conjugated twin waves; interchannel nonlinear impairments; nonlinear noise squeezing; numerical simulations; optimized digital electronic dispersion precompensation; orthogonal dimensions; polarization-division multiplexed binary phase-shift keying; vector twin waves; wavelength-division-multiplexed superchannel transmission; Constellation diagram; Erbium-doped fiber amplifiers; Nonlinear distortion; Optical fiber couplers; Optical fiber dispersion; Optical fiber polarization; Coherent optical transmission; digital signal processing; fiber nonlinearity mitigation; phase-conjugated twin waves; superchannel transmission;
fLanguage :
English
Journal_Title :
Lightwave Technology, Journal of
Publisher :
ieee
ISSN :
0733-8724
Type :
jour
DOI :
10.1109/JLT.2013.2280998
Filename :
6595619
Link To Document :
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