Koen Alexander

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Influence of longitudinal mode components on second harmonic generation in III-V-on-insulator nanowires

Charles Ciret, Koen Alexander, Nicolas Poulvellarie (UGent) , Maximilien Billet (UGent) , Carlos Mas Arabi, Bart Kuyken (UGent) , Simon-Pierre Gorza and Francois Leo

(2020) OPTICS EXPRESS. 28(21). p.31584-31593
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Second-harmonic generation enabled by longitudinal electric-field components in photonic wire waveguides

Nicolas Poulvellarie (UGent) , Utsav Dave, Koen Alexander, Charles Ciret, Maximilien Billet (UGent) , Carlos Mas Arabi, Fabrice Raineri, Sylvain Combrié, Alfredo De Rossi, Günther Roelkens (UGent) , et al.

(2020) PHYSICAL REVIEW A. 102(2).
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Second harmonic generation induced by longitudinal components in indium gallium phosphide nanowaveguides

Nicolas Poulvellarie (UGent) , Utsav Deepak Dave (UGent) , Koen Alexander, Charles Ciret, Fabrice Raineri, Sylvain Combrié, Alfredo De Rossi, Günther Roelkens (UGent) , Simon-Pierre Gorza, Bart Kuyken (UGent) , et al.

(2019) Nonlinear Optics (NLO). In OSA Technical Digest
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Experimental observation of second harmonic generation enabled by longitudinal components in indium gallium phosphide nanowires

Nicolas Poulvellarie (UGent) , Utsav Deepak Dave (UGent) , Koen Alexander, Charles Ciret, Simon-Pierre Gorza, Fabrice Raineri, Sylvain Combrie, Alfredo De Rossi, Günther Roelkens (UGent) , Bart Kuyken (UGent) , et al.

(2019) 2019 Conference on Lasers and Electro-Optics Europe & European Quantum Electronics Conference (CLEO/Europe-EQEC).
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Nanophotonic PZT-on-SiN pockels modulators

Koen Alexander, John Puthenparampil George (UGent) , Gilles Freddy Feutmba (UGent) , Isaac Luntadila Lufungula (UGent) , Kristiaan Neyts (UGent) , Bart Kuyken (UGent) , Jeroen Beeckman (UGent) and Dries Van Thourhout (UGent)

(2019) Smart Photonic and Optoelectronic Integrated Circuits XXI. In Proceedings of SPIE 10922.
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Nanophotonic PZT-on-SiN pockels modulators

Koen Alexander, John P. George, Gilles Freddy Feutmba (UGent) , Isaac Luntadila Lufungula (UGent) , Kristiaan Neyts (UGent) , Bart Kuyken (UGent) , Jeroen Beeckman (UGent) and Dries Van Thourhout (UGent)

(2019) Smart Photonic and Optoelectronic Integrated Circuits XXI.
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Hybrid PZT/Si TM/TE electro-optic phase modulators

Gilles Freddy Feutmba (UGent) , John P. George, Koen Alexander, Dries Van Thourhout (UGent) and Jeroen Beeckman (UGent)

(2019) INTEGRATED OPTICS: DEVICES, MATERIALS, AND TECHNOLOGIES XXIII. In Proceedings of SPIE 10921. p.109210Q-1-109210Q-7
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- PhD Thesis
Integrated silicon nitride photonics with highly nonlinear thin films and 2D materials : properties and devices

Koen Alexander

(2018)
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Advances in PZT-on-SiN electro-optic modulator platform

John Puthenparampil George (UGent) , Koen Alexander, Bart Kuyken (UGent) , Dries Van Thourhout (UGent) and Jeroen Beeckman (UGent)

(2018) Advanced Photonics Congress.
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Second harmonic generation by mixing longitudinal and transverse electric field components in indium gallium phosphide-on-insulator wire waveguides

Utsav Deepak Dave (UGent) , Nicolas Poulvellarie (UGent) , Koen Alexander, S.P. Gorza, F. Raineri, S. Combrie, A. De Rossi, Günther Roelkens (UGent) , Bart Kuyken (UGent) and F. Leo

(2018) Optical Sensors 2018 Advanced Photonics Congress. In OSA Technical Digest
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Optimization of hybrid PZT/Si electro-optic phase modulators

Gilles Freddy Feutmba (UGent) , John Puthenparampil George (UGent) , Koen Alexander, Dries Van Thourhout (UGent) and Jeroen Beeckman (UGent)

(2018) Proceedings of the 23rd Annual Symposium of the IEEE Photonics Society, Benelux Chapter. p.145-148
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Gate-tunable nonlinear refraction and absorption in graphene-covered silicon nitride waveguides

Koen Alexander, Nadja A. Savostianova, Sergey A. Mikhailov, Dries Van Thourhout (UGent) and Bart Kuyken (UGent)

(2018) ACS PHOTONICS. 5(12). p.4944-4950
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Electrically tunable nonlinear refraction and absorption in graphene-covered SiN waveguides

Koen Alexander, Bart Kuyken (UGent) and Dries Van Thourhout (UGent)

(2018) 2018 CONFERENCE ON LASERS AND ELECTRO-OPTICS (CLEO). In Conference on Lasers and Electro-Optics
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Nanophotonic Pockels modulators on a silicon nitride platform

Koen Alexander, John Puthenparampil George (UGent) , Jochem Verbist, Kristiaan Neyts (UGent) , Bart Kuyken (UGent) , Dries Van Thourhout (UGent) and Jeroen Beeckman (UGent)

(2018) NATURE COMMUNICATIONS. 9.
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Electrically tunable optical nonlinearities in graphene-covered SiN waveguides characterized by four-wave mixing

Koen Alexander, Nadja A. Savostianova, Sergey A. Mikhailov, Bart Kuyken (UGent) and Dries Van Thourhout (UGent)

(2017) ACS PHOTONICS. 4(12). p.3039-3044
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Hybrid graphene-silicon photonics devices for telecom and datacom

Dries Van Thourhout (UGent) , Leili Abdollahi Shiramin (UGent) , Chiara Alessandri, Koen Alexander, Bart Kuyken (UGent) , M. Pantouvaki, I. Asselberghs, S. Brems, J. Van Campenhout and C. Huygebaert

(2017) Graphene 2017, Abstracts.
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Broadband electro-optic modulation using low-loss PZT-on-silicon nitride integrated waveguides

Koen Alexander, John Puthenparampil George (UGent) , Bart Kuyken (UGent) , Jeroen Beeckman (UGent) and Dries Van Thourhout (UGent)

(2017) 2017 CONFERENCE ON LASERS AND ELECTRO-OPTICS (CLEO). In Conference on Lasers and Electro-Optics p.1-2
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New materials for modulators and switches in silicon photonics

Dries Van Thourhout (UGent) , Marianna Pantouvaki, Herbert D'heer (UGent) , Koen Alexander, Bart Kuyken (UGent) , Inge Asselberghs, Steven Brems, Cedric Huyghebaert, Leili Abdollahi Shiramin (UGent) , Chiara Alessandri, et al.

(2017) SILICON PHOTONICS XII. In Proceedings of SPIE 10108.
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Electrically tunable optical nonlinearity of graphene-covered SiN waveguides

Koen Alexander, Muhammad Mohsin, Utsav Deepak Dave (UGent) , Leili Abdollahi Shiramin (UGent) , Stéphane Clemmen (UGent) , Daniel Neumaier, Bart Kuyken (UGent) and Dries Van Thourhout (UGent)

(2017) 2017 CONFERENCE ON LASERS AND ELECTRO-OPTICS (CLEO). In Conference on Lasers and Electro-Optics
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Characterization of graphene-covered SiN waveguide using four-wave mixing

Koen Alexander, Bart Kuyken (UGent) and Dries Van Thourhout (UGent)

(2016) p.61-64
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Hybrid graphene-silicon photonics devices

Dries Van Thourhout (UGent) , Yingtao Hu (UGent) , M Pantouvaki, Koen Alexander, Bart Kuyken (UGent) , S Brems, I Asselberghs, C Huyghebaert, C Alessandri, P Absil, et al.

(2015) ECOC 2015 41ST EUROPEAN CONFERENCE ON OPTICAL COMMUNICATION.
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Electrically controllable saturable absorption in hybrid graphene-silicon waveguides

Koen Alexander, Yingtao Hu (UGent) , M Pantouvaki, S Brems, I Asselberghs, SP Gorza, C Huyghebaert, J Van Campenhout, Bart Kuyken (UGent) and Dries Van Thourhout (UGent)

(2015) Conference on Lasers and Electro-Optics.
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Cascadable excitability in optically injected microdisks

Thomas Van Vaerenbergh (UGent) , Koen Alexander, Martin Fiers (UGent) , Pauline Mechet (UGent) , Joni Dambre (UGent) and Peter Bienstman (UGent)

(2014) Proceedings of SPIE. In Proceedings of SPIE 9134.
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Excitation transfer between optically injected microdisk lasers

Thomas Van Vaerenbergh, Koen Alexander, Joni Dambre (UGent) and Peter Bienstman (UGent)

(2013) OPTICS EXPRESS. 21(23). p.28922-28932
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Excitability in optically injected microdisk lasers with phase controlled excitatory and inhibitory response

Koen Alexander, Thomas Van Vaerenbergh (UGent) , Martin Fiers (UGent) , Pauline Mechet (UGent) , Joni Dambre (UGent) and Peter Bienstman (UGent)

(2013) OPTICS EXPRESS. 21(22). p.26182-26191

Academic Bibliography

Koen Alexander

Influence of longitudinal mode components on second harmonic generation in III-V-on-insulator nanowires

Second-harmonic generation enabled by longitudinal electric-field components in photonic wire waveguides

Second harmonic generation induced by longitudinal components in indium gallium phosphide nanowaveguides

Experimental observation of second harmonic generation enabled by longitudinal components in indium gallium phosphide nanowires

Nanophotonic PZT-on-SiN pockels modulators

Nanophotonic PZT-on-SiN pockels modulators

Hybrid PZT/Si TM/TE electro-optic phase modulators

Integrated silicon nitride photonics with highly nonlinear thin films and 2D materials : properties and devices

Advances in PZT-on-SiN electro-optic modulator platform

Second harmonic generation by mixing longitudinal and transverse electric field components in indium gallium phosphide-on-insulator wire waveguides

Optimization of hybrid PZT/Si electro-optic phase modulators

Gate-tunable nonlinear refraction and absorption in graphene-covered silicon nitride waveguides

Electrically tunable nonlinear refraction and absorption in graphene-covered SiN waveguides

Nanophotonic Pockels modulators on a silicon nitride platform

Electrically tunable optical nonlinearities in graphene-covered SiN waveguides characterized by four-wave mixing

Hybrid graphene-silicon photonics devices for telecom and datacom

Broadband electro-optic modulation using low-loss PZT-on-silicon nitride integrated waveguides

New materials for modulators and switches in silicon photonics

Electrically tunable optical nonlinearity of graphene-covered SiN waveguides

Characterization of graphene-covered SiN waveguide using four-wave mixing

Hybrid graphene-silicon photonics devices

Electrically controllable saturable absorption in hybrid graphene-silicon waveguides

Cascadable excitability in optically injected microdisks

Excitation transfer between optically injected microdisk lasers

Excitability in optically injected microdisk lasers with phase controlled excitatory and inhibitory response

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