Research Explorer

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Researcher

John Puthenparampil George

Awards & Distinctions

37 Results

2024

Piezoelectrically driven Fano resonance in silicon photonics

Irfan AnsariGilles Freddy FeutmbaJohn Puthenparampil GeorgeHannes RijckaertJeroen BeeckmanDries Van Thourhout

A1 Journal Article in APL PHOTONICS

2023

High frequency characterization of PZT thin-films deposited by chemical solution deposition on SOI for integrated high speed electro-optic modulators

Gilles Freddy FeutmbaLeandro Da SilvaNishant SinghLaurens BreyneKobe De GeestJohn Puthenparampil GeorgeJohan BauwelinckDries Van ThourhoutXin YinJeroen Beeckman

A1 Journal Article in OPTICAL MATERIALS EXPRESS

2022

Light modulation in silicon photonics by PZT actuated acoustic waves

Irfan AnsariJohn Puthenparampil GeorgeGilles Freddy FeutmbaTessa Van de VeireAwanish PandeyJeroen BeeckmanDries Van Thourhout

A1 Journal Article in ACS PHOTONICS

PZT based actuator for an efficient electro-optomechanical interaction in Si-photonic integrated circuits

Irfan AnsariGilles Freddy FeutmbaEmiel DieussaertJohn Puthenparampil GeorgeJeroen BeeckmanDries Van Thourhout

2021

Acousto-optic modulation in a Si-waveguide

Irfan AnsariDries Van ThourhoutJohn Puthenparampil GeorgeGilles Freddy FeutmbaJeroen Beeckman

In-plane characterization of PZT thin films for the creation of a general impedance model

Tessa Van de VeireJohn Puthenparampil GeorgeHannes RijckaertKristiaan NeytsJohan LauwaertFilip BeunisJeroen Beeckman

A1 Journal Article in JOURNAL OF APPLIED PHYSICS

Large, electric-field induced tunable and reversible X2 in PZT thin films for on-chip second-order nonlinearities

Gilles Freddy FeutmbaArtur HermansJohn Puthenparampil GeorgeIrfan AnsariDries Van ThourhoutJeroen Beeckman

PZT based MEMS actuators for photonic integration

Irfan AnsariEmiel DieussaertJohn Puthenparampil GeorgeGilles Freddy FeutmbaJeroen BeeckmanDries Van Thourhout

Reversible and tunable second-order nonlinear optical susceptibility in PZT thin films for integrated optics

Gilles Freddy FeutmbaArtur HermansJohn Puthenparampil GeorgeHannes RijckaertIrfan AnsariDries Van ThourhoutJeroen Beeckman

A1 Journal Article in ADVANCED OPTICAL MATERIALS

2020

A strong pockels PZT/Si modulator for efficient electro-optic tuning

Gilles Freddy FeutmbaTessa Van de VeireIrfan AnsariJohn Puthenparampil GeorgeDries Van ThourhoutJeroen Beeckman

Design, fabrication and characterization of a distributed Bragg reflector for reducing the étendue of a wavelength converting system

Boxuan GaoJohn Puthenparampil GeorgeJeroen BeeckmanKristiaan Neyts

A1 Journal Article in OPTICS EXPRESS

Improvement of liquid crystal tunable lenses with weakly conductive layers using multifrequency driving

Tom VanackereTom VandekerckhoveElke ClaeysJohn Puthenparampil GeorgeKristiaan NeytsJeroen Beeckman

A1 Journal Article in OPTICS LETTERS

Si-photonic integrated PZT thin film for acousto-optic modulation

Irfan AnsariTessa Van de VeireJohn Puthenparampil GeorgeGilles Freddy FeutmbaJeroen BeeckmanDries Van Thourhout

2019

Axial electrokinetic trapping of anisotropic particles

Filip StrubbeBavo RobbenJohn Puthenparampil GeorgeIngrid Amer CidFilip BeunisKristiaan Neyts

A1 Journal Article in SCIENTIFIC REPORTS

Nanophotonic PZT-on-SiN pockels modulators

Koen AlexanderJohn Puthenparampil GeorgeGilles Freddy FeutmbaIsaac Luntadila LufungulaKristiaan NeytsBart KuykenJeroen BeeckmanDries Van Thourhout

Piezoelectric characterization of Si-photonic integrated PZT thin film

Irfan AnsariTessa Van de VeireJohn Puthenparampil GeorgeGilles Freddy FeutmbaJeroen BeeckmanDries Van Thourhout

Strong second-harmonic generation in PZT thin films

Gilles Freddy FeutmbaIsaac Luntadila LufungulaArtur HermansJohn Puthenparampil GeorgeTessa Van de VeireBart KuykenDries Van ThourhoutJeroen Beeckman

2018

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

John Puthenparampil GeorgeKoen AlexanderBart KuykenDries Van ThourhoutJeroen Beeckman

Multi-electrode tunable liquid crystal lenses with one lithography step

Jeroen BeeckmanTzu-Hsuan YangInge NysJohn Puthenparampil GeorgeTsung-Hsien LinKristiaan Neyts

A1 Journal Article in OPTICS LETTERS

Nanophotonic Pockels modulators on a silicon nitride platform

Koen AlexanderJohn Puthenparampil GeorgeJochem VerbistKristiaan NeytsBart KuykenDries Van ThourhoutJeroen Beeckman

A1 Journal Article in NATURE COMMUNICATIONS

Optimization of hybrid PZT/Si electro-optic phase modulators

Gilles Freddy FeutmbaJohn Puthenparampil GeorgeKoen AlexanderDries Van ThourhoutJeroen Beeckman

2017

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

Koen AlexanderJohn Puthenparampil GeorgeBart KuykenJeroen BeeckmanDries Van Thourhout

New materials for modulators and switches in silicon photonics

Dries Van ThourhoutMarianna PantouvakiHerbert D'heerKoen AlexanderBart KuykenInge AsselberghsSteven BremsCedric HuyghebaertLeili Abdollahi ShiraminChiara Alessandri et al.

2016

Bridging the electrode gap with ferroelectric thin films

Jeroen BeeckmanOliver WillekensXiaoning JiaJohn Puthenparampil GeorgeKristiaan Neyts

Ferroelectric thin films with liquid crystal for gradient index applications

Oliver WillekensJohn Puthenparampil GeorgeKristiaan NeytsJeroen Beeckman

A1 Journal Article in OPTICS EXPRESS

Integration of ferroelectric thin films on silicon for electro-optic devices

John Puthenparampil GeorgeJeroen BeeckmanDries Van Thourhout

Liquid Crystals on Ferroelectric Thin Films

Jeroen BeeckmanOliver WillekensJohn Puthenparampil GeorgeXiaoning JiaKristiaan Neyts

New materials for multifunctional photonics Ics

Dries Van ThourhoutZhechao WangBin TianYuting ShiM. PantouvakiC. MercklingYingtao HuI. AsselberghsS. BremsL. Abdolahi et al.

2015

Digitally controlled phase shifter using an SOI slot waveguide with liquid crystal infiltration

Yufei XingThomas AkoJohn Puthenparampil GeorgeDietmar KornHui YuPeter VerheyenMarianna PantouvakiGuy LepagePhilippe AbsilAlfonso Ruocco et al.

A1 Journal Article in IEEE PHOTONICS TECHNOLOGY LETTERS

High dielectric constant materials for low power liquid crystal tunable lenses

Oliver WillekensJohn Puthenparampil GeorgeKristiaan NeytsJeroen Beeckman

Lanthanide-assisted deposition of strongly electro-optic PZT thin films on silicon: toward integrated active nanophotonic devices

John Puthenparampil GeorgePhilippe SmetJonas BottermanVitaliy BliznukWouter WoestenborghsDries Van ThourhoutKristiaan NeytsJeroen Beeckman

A1 Journal Article in ACS APPLIED MATERIALS & INTERFACES

PZT-based transmissive liquid crystal lens approach

Oliver WillekensJohn Puthenparampil GeorgeKristiaan NeytsJeroen Beeckman

2014

Direct digital control of an efficient silicon+lequid crystal phase shifter

Yufei XingThomas AkoJohn Puthenparampil GeorgeD KornHui YuP VerheyenM PantouvakiG LepageP AbsilC Koos et al.

Ferroelectric thin films on silicon and glass for optical applications

Jeroen BeeckmanJohn Puthenparampil GeorgeKristiaan NeytsDries Van Thourhout

2013

Chemical solution deposited PZT thin films on silicon substrates with thin intermediate buffer layer

John Puthenparampil GeorgeJeroen BeeckmanWouter WoestenborghsPhilippe SmetWim BogaertsKristiaan Neyts

Preferentially oriented BaTiO3 thin films deposited on silicon with thin intermediate buffer layers

John Puthenparampil GeorgeJeroen BeeckmanWouter WoestenborghsPhilippe SmetWim BogaertsKristiaan Neyts

Preferentially oriented BaTiO3 thin films deposited on silicon with thin intermediate buffer layers

John Puthenparampil GeorgeJeroen BeeckmanWouter WoestenborghsPhilippe SmetWim BogaertsKristiaan Neyts

A1 Journal Article in NANOSCALE RESEARCH LETTERS