C
Chigo Okonkwo
Researcher at Eindhoven University of Technology
Publications - 279
Citations - 3286
Chigo Okonkwo is an academic researcher from Eindhoven University of Technology. The author has contributed to research in topics: Transmission (telecommunications) & Multi-mode optical fiber. The author has an hindex of 25, co-authored 258 publications receiving 2673 citations. Previous affiliations of Chigo Okonkwo include Ghent University & University of Central Florida.
Papers
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Journal ArticleDOI
Ultra-high-density spatial division multiplexing with a few-mode multicore fibre
R.G.H. van Uden,R. Amezcua Correa,E. Antonio Lopez,Frans Huijskens,Cen Xia,Guifang Li,Guifang Li,Axel Schülzgen,H. de Waardt,A.M.J. Koonen,Chigo Okonkwo +10 more
TL;DR: In this article, the authors demonstrate the viability of spatial multiplexing to reach a data rate of 5.1 Tbit/s−1/carrier−1 on a single wavelength over a single fiber, by employing few-mode multicore fiber, compact three-dimensional waveguide multiplexers and energy-efficient frequency-domain MIMO equalization.
Journal ArticleDOI
Six mode selective fiber optic spatial multiplexer.
A. M. Velazquez-Benitez,Juan Carlos Alvarado,Gisela Lopez-Galmiche,Jose Enrique Antonio-Lopez,Juan Hernández-Cordero,Jose Javier Sanchez-Mondragon,Pierre Sillard,Chigo Okonkwo,Rodrigo Amezcua-Correa +8 more
TL;DR: Low-loss all-fiber photonic lantern (PL) mode multiplexers capable of selectively exciting the first six fiber modes of a multimode fiber and the use of graded index fibers in a PL eases the length requirements of the adiabatic tapered transition and could enable scaling to large numbers are demonstrated.
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On the Mitigation of Optical Filtering Penalties Originating From ROADM Cascade
Talha Rahman,Antonio Napoli,Danish Rafique,Bernhard Spinnler,Maxim Kuschnerov,Iveth Lobato,Benoit Clouet,Marc Bohn,Chigo Okonkwo,Huug de Waardt +9 more
TL;DR: In this article, the authors proposed and analyzed possible configurations for the mitigation of these penalties in optical domain using optical wave shaper (WS), including one WS in every ROADM node allowing transmission of 28 and 32 GBd signals, which are QPSK, 8-QAM, or 16QAM modulated, through a cascade of 32 and 14 WSS filters.
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47.4 Gb/s Transmission Over 100 m Graded-Index Plastic Optical Fiber Based on Rate-Adaptive Discrete Multitone Modulation
Hejie Yang,S.C.J. Lee,Eduward Tangdiongga,Chigo Okonkwo,H.P.A. van den Boom,F. Breyer,Sebastian Randel,A.M.J. Koonen +7 more
TL;DR: In this paper, the authors demonstrate a bit-rate of 47.4 Gb/s over 100 m of perfluorinated multimode graded-index plastic optical fiber (GI-POF) by exploiting discrete multitone (DMT) modulation with rate-adaptive bitloading.
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Introducing Enumerative Sphere Shaping for Optical Communication Systems with Short Blocklengths
Abdelkerim Amari,Sebastiaan Goossens,Yunus Can Gultekin,Olga Vassilieva,Inwoong Kim,Tadashi Ikeuchi,Chigo Okonkwo,Frans M. J. Willems,Alex Alvarado +8 more
TL;DR: In this paper, the authors proposed to use enumerative sphere shaping (ESS) and investigate its performance for the nonlinear fiber optical channel, which has lower rate loss than CCDM at the same shaping rate, which makes it a suitable candidate to be implemented in real-time high speed optical systems.