Nonlinear Shannon Limit in Pseudolinear Coherent Systems

Mecozzi, Antonio; Essiambre, René-Jean

doi:10.1109/jlt.2012.2190582

Cited by 318 publications

(296 citation statements)

References 19 publications

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“…2). These results indicate that the impact of intercarrier crosstalk on SC-DBP performance depends on the modulation format, as also pointed out in [20,21]. Figure 6 shows the maximum Q 2 -factor value obtained at the optimum input power as function of the carrier spacing for DP-16QAM superchannel transmission.…”

Section: Resultssupporting

confidence: 67%

Impairment mitigation in superchannels with digital backpropagation and MLSD

Silva¹,

Larsen²,

Zibar³

2015

Opt. Express

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We assess numerically the performance of single-carrier digital backpropagation (SC-DBP) and maximum-likelihood sequence detection (MLSD) for DP-QPSK and DP-16QAM superchannel transmission over dispersion uncompensated links for three different cases of spectral shaping: optical pre-filtering of RZ and NRZ spectra, and digital Nyquist filtering. We investigate the limits for carrier proximity of each spectral shaping technique and the correspondent performance behavior of each algorithm, for both modulation formats. For superchannels with carrier spacing close to the Nyquist limit, it is shown that the maximum performance improvement of 1.0 dB in Q 2 -factor is provided by those algorithms. However, such gain can be highly reduced when the order of the modulation format increases.

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Section: Resultssupporting

confidence: 67%

Impairment mitigation in superchannels with digital backpropagation and MLSD

Silva¹,

Larsen²,

Zibar³

2015

Opt. Express

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show abstract

“…The recently discovered quasi-Gaussian nature of the statistics of the nonlinear interference (NLI) in dispersion unmanaged (DU) coherent optical links with single-carrier modulations stimulated the development of several analytical models to evaluate the variance of the NLI [1][2][3] , and of elementary bit error rate (BER) formulas based on the received signal to noise ratio (SNR) 4,5 . In this scenario, the Gaussian nonlinear (GN) model 1,6,7 is particularly attractive, since it is able to provide a simple analytical formula for the NLI power spectral density (PSD).…”

Section: Introductionmentioning

confidence: 99%

On the Accuracy of the Gaussian Nonlinear Model for Dispersion-unmanaged Coherent Links

Serena

Bononi

2013

39th European Conference and Exhibition on Optical Communication (ECOC 2013)

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We discuss the reasons why the Gaussian nonlinear model provides accurate bit error rate predictions in dispersion unmanaged PDM-QPSK coherent links. IntroductionThe recently discovered quasi-Gaussian nature of the statistics of the nonlinear interference (NLI) in dispersion unmanaged (DU) coherent optical links with single-carrier modulations stimulated the development of several analytical models to evaluate the variance of the NLI 1-3 , and of elementary bit error rate (BER) formulas based on the received signal to noise ratio (SNR) 4,5 . In this scenario, the Gaussian nonlinear (GN) model

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“…, A. D. Ellis (2) , A. Shiner (3) , A. I. Abd El-Rahman (1) , M. E. McCarthy (2) , M. Reimer (3) , A. Borowiec (3) , A. Kashi (1) (1) Queen's University, Kingston, ON, Canada; (2) Aston University, Birmingham, United Kingdom; (3) Ciena, Ottawa, ON, Canada john.cartledge@queensu.ca…”

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confidence: 99%