Chigo Okonkwo

Publication Activity (10 Years)

Years Active: 2008-2024
Publications (10 Years): 60

Top Topics

Experimental Verification

Estimation Algorithm

Myelinated Nerve

Top Venues

Publications

Benjamin J. Puttnam, Daniele Orsuti, Ruben S. Luis, Manuel S. Neves, Menno van den Hout, Giammarco Di Sciullo, Georg Rademacher, Jun Sakaguchi, Cristian Antonelli, Chigo Okonkwo, Luca Palmieri, Hideaki Furukawa
Wideband S, C,+ L-Band Comb Regeneration in Large-Scale Few-Mode MCF Link with Single-Mode Seed Channel. OFC (2024)
João dos Reis Frazão, Vincent van Vliet, Sjoerd van der Heide, Menno van den Hout, Kadir Gümüs, Aaron Albores-Mejia, Boris Skoric, Chigo Okonkwo
Co-propagation of Classical and Continuous-variable QKD Signals over a Turbulent Optical Channel with a Real-time QKD Receiver. OFC (2024)
Kadir Gümüs, João dos Reis Frazão, Vincent van Vliet, Sjoerd van der Heide, Menno van den Hout, Aaron Albores-Mejia, Thomas Bradley, Chigo Okonkwo
Adaptive Reconciliation for Experimental Continuous-Variable Quantum Key Distribution Over a Turbulent Free-Space Optical Channel. OFC (2024)
Giammarco Di Sciullo, Benjamin J. Puttnam, Menno van den Hout, Ruben S. Luís, Divya A. Shaji, Georg Rademacher, Chigo Okonkwo, Antonio Mecozzi, Cristian Antonelli, Hideaki Furukawa
45.7 Tb/s over 12 053 km Transmission with an All-Multi-Core Recirculating-Loop 4-Core-Fiber System. OFC (2024)
Menno van den Hout, Ruby S. B. Ospina, Ruben S. Luís, Benjamin J. Puttnam, Giammarco Di Sciullo, Tetsuya Hayashi, Ayumi Inoue, Takuji Nagashima, Simon Gross, Andrew Ross-Adams, Michael J. Withford, Jun Sakaguchi, Darli A. A. Mello, Cristian Antonelli, Hideaki Furukawa, Chigo Okonkwo, Georg Rademacher
Experimental Analysis of Receiver Failure For 19-Core Randomly Coupled Core Fibre Transmission. OFC (2024)
Benjamin J. Puttnam, Ruben S. Luis, Daniele Orsuti, Georg Rademacher, Giammarco Di Sciullo, Menno van den Hout, Jun Sakaguchi, Cristian Antonelli, Chigo Okonkwo, Luca Palmieri, Hideaki Furukawa
Experimental demonstration of a multi-core fiber seeded comb optical network (MCF-SCON). J. Opt. Commun. Netw. 16 (7) (2024)
Sjoerd van der Heide, João Frazão, Aaron Albores-Mejia, Chigo Okonkwo
Receiver Noise Stability Calibration for CV-QKD. OFC (2023)
Kadir Gümüs, Bin Chen, Thomas Bradley, Chigo Okonkwo
A Simplified Method for Optimising Geometrically Shaped Constellations of Higher Dimensionality. CoRR (2023)
Menno van den Hout, Giammarco Di Sciullo, Georg Rademacher, Ruben S. Luís, Benjamin J. Puttnam, Nicolas K. Fontaine, Roland Ryf, Haoshuo Chen, Mikael Mazur, David T. Neilson, Pierre Sillard, Frank Achten, Jun Sakaguchi, Cristian Antonelli, Chigo Okonkwo, Hideaki Furukawa
273.6 Tb/s Transmission Over 1001 km of 15-Mode Fiber Using 16-QAM C-Band Signals. OFC (2023)
Georg Rademacher, Menno van den Hout, Ruben S. Luís, Benjamin J. Puttnam, Giammarco Di Sciullo, Tetsuya Hayashi, Ayumi Inoue, Takuji Nagashima, Simon Gross, Andrew Ross-Adams, Michael J. Withford, Jun Sakaguchi, Cristian Antonelli, Chigo Okonkwo, Hideaki Furukawa
Randomly Coupled 19-Core Multi-Core Fiber with Standard Cladding Diameter. OFC (2023)
Kadir Gümüs, João dos Reis Frazão, Vincent van Vliet, Sjoerd van der Heide, Menno van den Hout, Aaron Albores-Mejia, Thomas Bradley, Chigo Okonkwo
Adaptive Reconciliation for Experimental Continuous-Variable Quantum Key Distribution Over a Turbulent Free-Space Optical Channel. CoRR (2023)
Yunus Can Gültekin, Olga Vassilieva, Inwoong Kim, Paparao Palacharla, Chigo Okonkwo, Alex Alvarado
On Optimum Enumerative Sphere Shaping Blocklength at Different Symbol Rates for the Nonlinear Fiber Channel. CoRR (2022)
Sjoerd van der Heide, Ruben S. Luis, Benjamin J. Puttnam, Georg Rademacher, Ton Koonen, Satoshi Shinada, Yoshinari Awaji, Hideaki Furukawa, Chigo Okonkwo
Real-time transmission using a GPU-based Kramers-Kronig coherent receiver. OECC/PSC (2022)
Sjoerd van der Heide, Bram van Esch, Menno van den Hout, Thomas Bradley, Amado M. Velazquez-Benitez, Nicolas K. Fontaine, Roland Ryf, Haoshuo Chen, Mikael Mazur, Jose Enrique Antonio-López, Juan Carlos Alvarado-Zacarias, Rodrigo Amezcua Correa, Chigo Okonkwo
Optical Field Characterization using Off-axis Digital Holography. OFC (2022)
Yunus Can Gültekin, Olga Vassilieva, Inwoong Kim, Paparao Palacharla, Chigo Okonkwo, Alex Alvarado
On Optimum Enumerative Sphere Shaping Blocklength at Different Symbol Rates for the Nonlinear Fiber Channel. OECC/PSC (2022)
Ruben S. Luis, Sjoerd van der Heide, Georg Rademacher, Benjamin J. Puttnam, Chigo Okonkwo, Hideaki Furukawa
Overview of GPU-Based Real-Time Receivers Using Kramers-Kronig Coherent Detection. OECC/PSC (2022)
Bin Chen, Wei Ling, Yunus Can Gültekin, Yi Lei, Chigo Okonkwo, Alex Alvarado
Low-Complexity Geometrical Shaping for 4D Modulation Formats via Amplitude Coding. CoRR (2021)
Sjoerd van der Heide, Ruben S. Luis, Benjamin J. Puttnam, Georg Rademacher, Ton Koonen, Satoshi Shinada, Yoshinari Awaji, Hideaki Furukawa, Chigo Okonkwo
10, 000 km Straight-line Transmission using a Real-time Software-defined GPU-Based Receiver. OFC (2021)
Menno van den Hout, Sjoerd van der Heide, Ali Mefleh, Chigo Okonkwo
Extending White Gaussian Noise Capacity Estimation Method with Probabilistic Constellation Shaping. ECOC (2021)
Menno van den Hout, Sjoerd van der Heide, Chigo Okonkwo
Kramers-Kronig Receiver Combined With Digital Resolution Enhancer. OFC (2021)
Chigo Okonkwo, Menno van den Hout, Sjoerd van der Heide, John van Weerdenburg
Fibre device estimation techniques for SDM transmission. ECOC (2021)
Ruby S. B. Ospina, Menno van den Hout, Sjoerd van der Heide, Chigo Okonkwo, Darli A. A. Mello
Neural-network-based MDG and Optical SNR Estimation in SDM Transmission. OFC (2021)
Bin Chen, Chigo Okonkwo, Alex Alvarado
Nonlinear Interference Analysis of Probabilistic Shaping vs. 4D Geometrically Shaped Formats. CoRR (2020)
Bin Chen, Chigo Okonkwo, Alex Alvarado
Nonlinear Interference Analysis of Probabilistic Shaping vs. 4D Geometrically Shaped Formats. ECOC (2020)
Juan Carlos Alvarado-Zacarias, Nicolas K. Fontaine, Roland Ryf, Haoshuo Chen, Sjoerd van der Heide, Jose Enrique Antonio-Lopez, Steffen Wittek, Guifang Li, Chigo Okonkwo, Marianne Bigot-Astruc, Adrian Amezcua Correa, Pierre Sillard, Rodrigo Amezcua Correa
Assembly and Characterization of a Multimode EDFA using Digital Holography. OFC (2020)
Ruby S. B. Ospina, Chigo Okonkwo, Darli A. A. Mello
DSP-Based Mode-Dependent Loss and Gain Estimation in Coupled SDM Transmission. OFC (2020)
Menno van den Hout, Sjoerd van der Heide, John van Weerdenburg, Marianne Bigot-Astruc, Adrian Amezcua Correa, Jose Enrique Antonio-Lopez, Juan Carlos Alvarado-Zacarias, Pierre Sillard, Rodrigo Amezcua Correa, Chigo Okonkwo
1 Tbit/s/λ Transmission Over a 130 km Link Consisting of Graded-Index 50µm Core Multi-Mode Fiber and 6LP Few-Mode Fiber. ECOC (2020)
Sjoerd van der Heide, Rutger van Anrooij, Menno van den Hout, Nicolas K. Fontaine, Roland Ryf, Haoshuo Chen, Mikael Mazur, Jose Enrique Antonio-Lopez, Juan Carlos Alvarado-Zacarias, Ton Koonen, Rodrigo Amezcua Correa, Chigo Okonkwo
Exploiting Angular Multiplexing for Polarization-diversity in Off-axis Digital Holography. ECOC (2020)
Menno van den Hout, Ruby S. B. Ospina, Sjoerd van der Heide, Juan Carlos Alvarado-Zacarias, Jose Enrique Antonio-Lopez, Marianne Bigot-Astruc, Adrian Amezcua Correa, Pierre Sillard, Rodrigo Amezcua Correa, Darli A. A. Mello, Chigo Okonkwo
Experimental validation of MDL emulation and estimation techniques for SDM transmission systems. ECOC (2020)
Sjoerd van der Heide, Juan Carlos Alvarado-Zacarias, Nicolas K. Fontaine, Roland Ryf, Haoshuo Chen, Rodrigo Amezcua Correa, Ton Koonen, Chigo Okonkwo
Low-Loss Low-MDL Core Multiplexer for 3-Core Coupled-Core Multi-Core Fiber. OFC (2020)
Bin Chen, Alex Alvarado, Sjoerd van der Heide, Menno van den Hout, Hartmut Hafermann, Chigo Okonkwo
Analysis and Experimental Demonstration of Orthant-Symmetric Four-dimensional 7 bit/4D-sym Modulation for Optical Fiber Communication. CoRR (2020)
Sjoerd van der Heide, Ruben S. Luis, Benjamin J. Puttnam, Georg Rademacher, Ton Koonen, Satoshi Shinada, Yoshinari Awaji, Chigo Okonkwo, Hideaki Furukawa
Real-time, Software-Defined, GPU-Based Receiver Field Trial. ECOC (2020)
Bin Chen, Yi Lei, Gabriele Liga, Chigo Okonkwo, Alex Alvarado
Hard-Decision Coded Modulation for High-Throughput Short-Reach Optical Interconnect. Entropy 22 (4) (2020)
Bin Chen, Yi Lei, Sjoerd van der Heide, John van Weerdenburg, Alex Alvarado, Chigo Okonkwo
First Experimental Verification of Improved Decoding of Staircase Codes using Marked Bits. OFC (2019)
Sjoerd van der Heide, Bin Chen, Menno van den Hout, Gabriele Liga, Ton Koonen, Hartmut Hafermann, Alex Alvarado, Chigo Okonkwo
11, 700 km Transmission at 4.8 bit/4D-sym via Four-dimensional Geometrically-shaped Polarization-Ring-Switching Modulation. OECC/PSC (2019)
Sebastiaan Goossens, Sjoerd van der Heide, Menno van den Hout, Abdelkerim Amari, Yunus Can Gültekin, Olga Vassilieva, Inwoong Kim, Tadashi Ikeuchi, Frans M. J. Willems, Alex Alvarado, Chigo Okonkwo
First Experimental Demonstration of Probabilistic Enumerative Sphere Shaping in Optical Fiber Communications. OECC/PSC (2019)
Álvaro Morales, Dimitrios Konstantinou, Simon Rommel, Ulf Johannsen, Chigo Okonkwo, Idelfonso Tafur Monroy
Physical-Layer Confidentiality by Chaotic Encoding in Radio-Over-Fiber Systems. OFC (2019)
Sebastiaan Goossens, Sjoerd van der Heide, Menno van den Hout, Abdelkerim Amari, Yunus Can Gültekin, Olga Vassilieva, Inwoong Kim, Tadashi Ikeuchi, Frans M. J. Willems, Alex Alvarado, Chigo Okonkwo
First Experimental Demonstration of Probabilistic Enumerative Sphere Shaping in Optical Fiber Communications. CoRR (2019)
Gabriele Liga, Bin Chen, Sjoerd van der Heide, Alireza Sheikh, Menno van den Hout, Chigo Okonkwo, Alex Alvarado
30% Reach Increase via Low-complexity Hybrid HD/SD FEC and Nonlinearity-tolerant 4D Modulation. CoRR (2019)
Bin Chen, Chigo Okonkwo, Hartmut Hafermann, Alex Alvarado
Polarization-ring-switching for nonlinearity-tolerant geometrically-shaped four-dimensional formats maximizing generalized mutual information. CoRR (2019)
Abdelkerim Amari, Sebastiaan Goossens, Yunus Can Gultekin, Olga Vassilieva, Inwoong Kim, Tadashi Ikeuchi, Chigo Okonkwo, Frans M. J. Willems, Alex Alvarado
Enumerative Sphere Shaping for Rate Adaptation and Reach Increase in WDM Transmission Systems. CoRR (2019)
Thiago R. Raddo, Simon Rommel, Victor Land, Chigo Okonkwo, Idelfonso Tafur Monroy
Quantum Data Encryption as a Service on Demand: Eindhoven QKD Network Testbed. ICTON (2019)
Abdelkerim Amari, Sebastiaan Goossens, Yunus Can Gultekin, Olga Vassilieva, Inwoong Kim, Tadashi Ikeuchi, Chigo Okonkwo, Frans M. J. Willems, Alex Alvarado
Introducing Enumerative Sphere Shaping for Optical Communication Systems with Short Blocklengths. CoRR (2019)
John van Weerdenburg, Simon Rommel, Jose Manuel Delgado Mendinueta, Werner Klaus, Jun Sakaguchi, Juan Jose Vegas Olmos, Ton Koonen, Yoshinari Awaji, Idelfonso Tafur Monroy, Chigo Okonkwo, Naoya Wada
Chromatic Dispersion Analysis and Compensation in a Large Core-Count Few-Mode Multi-Core Fiber Based on Optical Vector Network Analysis. OFC (2019)
Anuar de Jesus Fernandez Olvera, Álvaro Morales, Yunfeng Dong, Dimitrios Konstantiouv, Simon Rommel, Tom Johansen, Chigo Okonkwo, Idelfonso Tafur Monroy, Sascha Preu
W-Band Heterodyne Wireless System with 2.3 GHz Intermediate Frequency Driven Entirely by ErAs: In(Al)GaAs Photoconductors. ICTON (2019)
Roland Ryf, John van Weerdenburg, Roberto A. Alvarez-Aguirre, Nicolas K. Fontaine, René-Jean Essiambre, Haoshuo Chen, Juan Carlos Alvarado-Zacarias, Rodrigo Amezcua Correa, Ton Koonen, Chigo Okonkwo
White Gaussian Noise Based Capacity Estimate and Characterization of Fiber-Optic Links. OFC (2018)
Bin Chen, Chigo Okonkwo, Domaniç Lavery, Alex Alvarado
Geometrically-shaped 64-point Constellations via Achievable Information Rates. ICTON (2018)
John van Weerdenburg, Roland Ryf, Roberto A. Alvarez-Aguirre, Nicolas K. Fontaine, René-Jean Essiambre, Haoshuo Chen, Juan Carlos Alvarado-Zacarias, Rodrigo Amezcua Correa, Simon Gross, Nicolas Riesen, Michael J. Withford, David W. Peckham, Alan McCurdy, Robert Lingle, Ton Koonen, Chigo Okonkwo
Mode-Multiplexed 16-QAM Transmission over 2400-km Large-Effective-Area Depressed-Cladding 3-Mode Fiber. OFC (2018)
Haoshuo Chen, Nicolas K. Fontaine, Roland Ryf, Juan Carlos Alvarado, John van Weerdenburg, Rodrigo Amezcua Correa, Chigo Okonkwo, Ton Koonen
Optical Crosstalk Reduction using Amplified Spontaneous Emission (ASE). OFC (2018)
Bin Chen, Chigo Okonkwo, Hartmut Hafermann, Alex Alvarado
Increasing Achievable Information Rates via Geometric Shaping. ECOC (2018)
Sjoerd van der Heide, John van Weerdenburg, Marianne Bigot-Astruc, Adrian Amezcua Correa, Jose Antonio-Lopez, Juan Carlos Alvarado-Zacarias, Huug de Waardt, Ton Koonen, Pierre Sillard, Rodrigo Amezcua Correa, Chigo Okonkwo
Single Carrier 1 Tbit/s Mode-Multiplexed Transmission Over Graded-Index 50µm Core Multi-Mode Fiber Employing Kramers-Kronig Receivers. ECOC (2018)
Sjoerd van der Heide, Ton Koonen, Chigo Okonkwo
Experimental Validation of a Channel Estimation Algorithm for Transmitter-side Digital Pre-compensation Filters. OFC (2018)
Bin Chen, Chigo Okonkwo, Hartmut Hafermann, Alex Alvarado
Increasing Achievable Information Rates via Geometric Shaping. CoRR (2018)
Idelfonso Tafur Monroy, Thiago R. Raddo, Simon Rommel, Chigo Okonkwo, Nicola Calabretta, Ulf Johannsen, Gijs Dubbelman, Jesse Scholtes, Ben Rutten
Testing Facilities for End-to-End Test of Vertical Applications Enabled by 5G Networks: Eindhoven 5G Brainport Testbed. ICTON (2018)
Sjoerd van der Heide, Aaron Albores-Mejia, Fausto Gomez-Agis, Boudewijn Docter, Chigo Okonkwo
112-Gbit/s Single Side-Band PAM-4 Transmission over Inter-DCI Distances Without DCF Enabled by Low-complexity DSP. ECOC (2017)
Aaron Albores-Mejia, Sjoerd van der Heide, Muhammad Usman Sadiq, Saeed Tahvili, Chigo Okonkwo, Boudewijn Docter
112-Gbit/sλ PAM4 Transmission enabled by a Negatively-Chirped InP-MZ Modulator. ECOC (2017)
Nicolas K. Fontaine, Haoshuo Chen, Roland Ryf, David T. Neilson, Juan Carlos Alvarado, John van Weerdenburg, Rodrigo Amezcua Correa, Chigo Okonkwo, Joel Carpenter
Programmable Vector Mode Multiplexer. ECOC (2017)
John van Weerdenburg, Roland Ryf, Juan Carlos Alvarado-Zacarias, Roberto A. Alvarez-Aguirre, Nicolas K. Fontaine, Haoshuo Chen, Rodrigo Amezcua Correa, Ton Koonen, Chigo Okonkwo
138 Tbit/s Transmission over 650 km Graded-Index 6-Mode Fiber. ECOC (2017)
Danish Rafique, Talha Rahman, Bernhard Spinnler, Erwan Pincemin, Stefano Calabrò, Erik De Man, Uwe Feiste, Juraj Slovak, Antonio Napoli, Claude Le Bouette, Jérémie Jauffrit, Sylvain Bordais, Ginni Khanna, Norbert Hanik, Chigo Okonkwo, Maxim Kuschnerov, A. M. J. Koonen, Christian Dourthe, Bruno Raguenes, Tomislav Drenski, Bernd Sommerkorn-Krombholz, Huug de Waardt, Marc Bohn
Multi-flex field trial over 762km of G.652 SSMF using programmable modulation formats up to 64QAM. OFC (2016)
Eric Sillekens, Alex Alvarado, Chigo Okonkwo, Benn C. Thomsen
An Experimental Comparison of Coded Modulation Strategies for 100 Gbit/s Transceivers. CoRR (2016)
Jochem Verbist, Jing Zhang, Bart Moeneclaey, John van Weerdenburg, Roy van Uden, Chigo Okonkwo, Xin Yin, Johan Bauwelinck, Gunther Roelkens
112 Gbit/s single-polarization silicon coherent receiver with hybrid-integrated BiCMOS linear TIA. ECOC (2015)
A. M. Velazquez-Benitez, Jose Enrique Antonio-Lopez, Juan Carlos Alvarado-Zacarias, G. Lopez-Galmiche, Pierre Sillard, Dennis Van Ras, Chigo Okonkwo, Haoshuo Chen, Roland Ryf, Nicolas K. Fontaine, Rodrigo Amezcua Correa
Scaling the fabrication of higher order photonic lanterns using microstructured preforms. ECOC (2015)
A. M. Velazquez-Benitez, Juan Carlos Alvarado-Zacarias, G. Lopez-Galmiche, Jose Enrique Antonio-Lopez, Axel Schülzgen, Dennis Van Ras, Pierre Sillard, Chigo Okonkwo, Rodrigo Amezcua Correa
Six spatial modes photonic lanterns. OFC (2015)
Marc Bohn, Antonio Napoli, Antonio D'Errico, Giuseppe Ferraris, Matthias Gunkel, Felipe Jiménez, Juan Pedro Fernández-Palacios, Patricia Layec, George Zervas, Norberto Amaya Gonzalez, Dimitra Simeonidou, Johannes Karl Fischer, Markus Nölle, Colja Schubert, Nicola Sambo, Filippo Cugini, Piero Castoldi, Michela Svaluto Moreolo, Josep M. Fabrega, Chigo Okonkwo, Huug de Waardt
Elastic optical networks: The vision of the ICT project IDEALIST. Future Network & Mobile Summit (2013)
Nguyen-Cac Tran, Chigo Okonkwo, Eduward Tangdiongga, Hyun-Do Jung, Ton Koonen
Cyclic-Linked Flexibility: An Architectural Approach for Reconfigurable Optical WDM-TDM Access Networks. JOCN 5 (6) (2013)
Shumao Ou, Kun Yang, Marcos Paredes-Farrera, Chigo Okonkwo, Kenneth M. Guild
A control bridge to automate the convergence of Passive Optical Networks and IEEE 802.16 (WiMAX) wireless networks. BROADNETS (2008)
Chigo Okonkwo, Raul C. Almeida Jr., Richard E. Martin, Kenneth M. Guild
Performance analysis of an optical packet switch with shared parametric wavelength converters. IEEE Commun. Lett. 12 (8) (2008)