138 citations · 192 across the 7 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…