Inter-Channel Nonlinear Interference Noise in WDM Systems: Modeling and Mitigation

Dar, Ronen; Feder, Meir; Mecozzi, Antonio; Shtaif, Mark

doi:10.1109/jlt.2014.2384998

Cited by 158 publications

(118 citation statements)

References 30 publications

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“…Furthermore, generating the sequence y K 1 requires performing the SSFM, which is slow and cumbersome for long sequences. This limitation can be circumvented by employing some of the recent techniques for fiber channel modeling [17], [18]. However, in their present form, i.i.d.…”

Section: Discussion and Future Workmentioning

confidence: 99%

Temporal Probabilistic Shaping for Mitigation of Nonlinearities in Optical Fiber Systems

Yankov

Larsen

Forchhammer

2017

J. Lightwave Technol.

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Abstract-In this paper, finite state machine sources (FSMSs) are used to shape quadrature amplitude modulation (QAM) for nonlinear transmission in optical fiber communication systems. The previous optimization algorithm for FSMSs is extended to cover an average power constraint, thus enabling temporal optimization with multi-amplitude constellations output, such as QAM. The optimized source results in increased received SNR and thereby increased achievable information rates (AIR)s under memoryless assumption. The AIR is increased even further when taking the channel and transmitter memory into account via trellis processing at the receiver. Significant gains are reported in the highly nonlinear region of transmission for an FSMS of up to second order and 16QAM and particularly for unrepeated transmission. At the optimal launch power of WDM transmission, the FSMS order needs to be increased further in order to notably outperform previous probabilistic shaping schemes.

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Section: Discussion and Future Workmentioning

confidence: 99%

Temporal Probabilistic Shaping for Mitigation of Nonlinearities in Optical Fiber Systems

Yankov

Larsen

Forchhammer

2017

J. Lightwave Technol.

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“…They can be used to model almost any deterministic or stochastic perturbation effect that makes the system deviate from a known ideal behavior and have a long history of application to the NLSE. Thus, they are likely to play an important role to address signal-noise interaction and inter-channel nonlinearity in both systems of figure 15 [97][98][99].…”

Section: Current and Future Challengesmentioning

confidence: 99%

Roadmap of optical communications

Agrell

Karlsson

Chraplyvy³

et al. 2016

J. Opt.

467

268

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Lightwave communications is a necessity for the information age. Optical links provide enormous bandwidth, and the optical fiber is the only medium that can meet the modern society's needs for transporting massive amounts of data over long distances. Applications range from global highcapacity networks, which constitute the backbone of the internet, to the massively parallel interconnects that provide data connectivity inside datacenters and supercomputers. Optical communications is a diverse and rapidly changing field, where experts in photonics, communications, electronics, and signal processing work side by side to meet the ever-increasing demands for higher capacity, lower cost, and lower energy consumption, while adapting the system design to novel services and technologies. Due to the interdisciplinary nature of this rich research field, Journal of Optics has invited 16 researchers, each a world-leading expert in their respective subfields, to contribute a section to this invited review article, summarizing their views on state-of-the-art and future developments in optical communications.

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“…When the carriers experience low levels of crosstalk (Fig. 4(c)), SC-DBP provides the same 1.0 dB margin of improvement at the optimal input power, which is the expected value for single-carrier NLC [17,18] in multicarrier transmission scenarios. Finally, as depicted in (Fig.…”

Section: Resultsmentioning

confidence: 57%

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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Inter-Channel Nonlinear Interference Noise in WDM Systems: Modeling and Mitigation

Cited by 158 publications

References 30 publications

Temporal Probabilistic Shaping for Mitigation of Nonlinearities in Optical Fiber Systems

Temporal Probabilistic Shaping for Mitigation of Nonlinearities in Optical Fiber Systems

Roadmap of optical communications

Impairment mitigation in superchannels with digital backpropagation and MLSD

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