138 citations · 349 across the 13 of their papers we have counts for
13 papers
PDL Impact on Linearly Coded Digital Phase Conjugation Techniques in CO-OFDM Systems
O. S. Sunish Kumar, A. Amari, O. A. Dobre +1
We investigate the impact of polarization-dependent loss (PDL) on the linearly coded digital phase conjugation (DPC) techniques in coherent optical orthogonal frequency division mu…
Second-Order Perturbation Theory-Based Digital Predistortion for Fiber Nonlinearity Compensation
O. S. Sunish Kumar, A. Amari, O. A. Dobre +1
The first-order (FO) perturbation theory-based nonlinearity compensation (PB-NLC) technique has been widely investigated to combat the detrimental effects of the intra-channel Kerr…
A Joint Technique for Nonlinearity Compensation in CO-OFDM Superchannel Systems
O. S. Sunish Kumar, A. Amari, O. A. Dobre +2
We propose a technique combining the singlechannel digital-back-propagation (SC-DBP) with phaseconjugated-twin-wave (PCTW) to compensate nonlinearities in CO-OFDM superchannel syst…
A Spectrally Efficient Linear Polarization Coding Scheme for Fiber Nonlinearity Compensation in CO-OFDM Systems
O. S. Sunish Kumar, O. A. Dobre, R. Venkatesan +4
In this paper, we propose a linear polarization coding scheme (LPC) combined with the phase conjugated twin signals (PCTS) technique, referred to as LPC-PCTS, for fiber nonlinearit…
Multi-dimensional Short Blocklength Probabilistic Shaping for Digital Subcarrier Multiplexing Systems
Abdelkerim Amari, Andre Richter
We propose multi-dimensional short blocklength probabilistic shaping to increase the nonlinear tolerance gain in digital subcarrier multiplexing transmission systems and demonstrat…
Comparison of Short Blocklength Sphere Shaping and Nonlinearity Compensation in WDM Systems
Abdelkerim Amari, Lutz Lampe, O. S. Sunish Kumar +2
In optical communication systems, short blocklength probabilistic enumerative sphere shaping (ESS) provides both linear shaping gain and nonlinear tolerance. In this work, we inves…
Intra-Channel Nonlinearity Compensation Based on Second-Order Perturbation Theory
O. S. Sunish Kumar, A. Amari, O. A. Dobre +1
The first-order (FO) perturbation theory has been widely investigated to design the digital nonlinearity compensation (NLC) technique to deal with the intra-channel fiber nonlinear…
Fiber Nonlinearity Mitigation via the Parzen Window Classifier for Dispersion Managed and Unmanaged Links
Abdelkerim Amari, Xiang Lin, Octavia A. Dobre +2
Machine learning techniques have recently received significant attention as promising approaches to deal with the optical channel impairments, and in particular, the nonlinear effe…
First Experimental Demonstration of Probabilistic Enumerative Sphere Shaping in Optical Fiber Communications
Sebastiaan Goossens, Sjoerd van der Heide, Menno van den Hout +8
We transmit probabilistic enumerative sphere shaped dual-polarization 64-QAM at 350Gbit/s/channel over 1610km SSMF using a short blocklength of 200. A reach increase of 15% over co…
Enumerative Sphere Shaping for Rate Adaptation and Reach Increase in WDM Transmission Systems
Abdelkerim Amari, Sebastiaan Goossens, Yunus Can Gultekin +6
The performance of enumerative sphere shaping (ESS), constant composition distribution matching (CCDM), and uniform signalling are compared at the same forward error correction rat…
Introducing Enumerative Sphere Shaping for Optical Communication Systems with Short Blocklengths
Abdelkerim Amari, Sebastiaan Goossens, Yunus Can Gultekin +6
Probabilistic shaping based on constant composition distribution matching (CCDM) has received considerable attention as a way to increase the capacity of fiber optical communicatio…
A Machine Learning-Based Detection Technique for Optical Fiber Nonlinearity Mitigation
Abdelkerim Amari, Xiang Lin, Octavia A. Dobre +2
We investigate the performance of a machine learning classification technique, called the Parzen window, to mitigate the fiber nonlinearity in the context of dispersion managed and…
A survey on fiber nonlinearity compensation for 400 Gbps and beyond optical communication systems
Abdelkerim Amari, Octavia A. Dobre, Ramachandran Venkatesan +3
Optical communication systems represent the backbone of modern communication networks. Since their deployment, different fiber technologies have been used to deal with optical fibe…