Explanipedia

Bi-directional spectral broadening measurements for accurate characterisation of nonlinear hybrid integrated waveguides Open

M. K. Dyatlov, Philippe Delaye, Laurent Vivien, Nicolas Dubreuil · 2022

The emerging interest in integrated optical technologies raises the need for precise characterisation techniques for waveguides presenting nonlinearities. Here we propose a non-interferometric measurement to accurately characterise the Ker…

Heterogeneous Integration of Doped Crystalline Zirconium Oxide for Photonic Applications Open

Alicia Ruiz‐Caridad, Guillaume Marcaud, Elena Duran-Valdeiglesias, Joan Manel Ramírez, Jianhao Zhang , et al. · 2021

Hybrid integration of new materials will play a key role in the next photonics revolution, unlocking the development of advanced devices with outstanding performances and innovative functionalities. Functional oxides, thanks to the richnes…

Measurement of In-Band Optical Noise Spectral Density Open

Sylvain Almonacil, Matteo Lonardi, Philippe Jennevé, Nicolas Dubreuil · 2021

We present a method to measure the spectral density of in-band optical transmission impairments without coherent electrical reception and digital signal processing at the receiver. We determine the method's accuracy by numerical simulation…

Third-order nonlinear optical susceptibility of crystalline oxide yttria-stabilized zirconia Open

Guillaume Marcaud, Samuel Serna, Karamanis Panaghiotis, Carlos Alonso‐Ramos, Xavier Le Roux , et al. · 2020

Nonlinear all-optical technology is an ultimate route for the next-generation ultrafast signal processing of optical communication systems. New nonlinear functionalities need to be implemented in photonics, and complex oxides are considere…

Engineering third-order optical nonlinearities in hybrid chalcogenide-on-silicon platform Open

Samuel Serna, Hongtao Lin, Carlos Alonso‐Ramos, Christian Lafforgue, Xavier Le Roux , et al. · 2019

We demonstrated a class of highly nonlinear hybrid waveguide structures based on infiltration of As₂S₃ chalcogenide glass into silicon slot waveguides. The nonlinear properties of the hybrid waveguides were precisely …

Nonlinear third order silicon photonics enabled by dispersion and subwavelength engineering Open

Christian Lafforgue, Samuel Serna, Sylvain Guerber, Hongtao Lin, Joan Manel Ramírez , et al. · 2019

Integrated photonics has for several years included in its panoply the development of functions based on third-order non-linear optical phenomena, from the generation of supercontinuum or frequency comb sources to metrology or spectroscopy…

Ge-rich SiGe waveguides for supercontinuum generation in the mid-IR Open

Nicolas Dubreuil, Joan Manel Ramírez, Samuel Serna, Vladyslav Vakarin, Qiankun Liu , et al. · 2018

he third-order nonlinear parameter of Ge-rich SiGe waveguides are experimentally retrieved using a bi-directional top hat D-scan at λ = 1.58 μm. The obtained values are then used to fit the theoretical equation, providing promising values …

Optical characterization of a nanofiber immersed in a Raman liquid (Orale) Open

Maha Bouhadida, Abderrahim Azzoune, Philippe Delaye, Nicolas Dubreuil, Gilles Pauliat , et al. · 2018

(Invited) Silicon Photonics Based on Ge/Sige Quantum Well (QW) Structures and Ge-Rich Materials for Near-IR and Mid-IR Open

Joan Manel Ramírez, Vladyslav Vakarin, Papichaya Chaisakul, Samuel Serna, Qiankun Liu , et al. · 2018

Silicon photonics is a disruptive technology poised to revolutionize several areas of our society. It has often been considered as the natural step forward to overcome some of the inherent bottlenecks of current microelectronics technology…

Nonlinear optical properties of integrated GeSbS chalcogenide waveguides Open

Samuel Serna, Hongtao Lin, Carlos Alonso‐Ramos, Anupama Yadav, Xavier Le Roux , et al. · 2018

In this paper, we report the experimental characterization of highly nonlinear GeSbS chalcogenide glass waveguides.We used a single-beam characterization protocol that accounts for the magnitude and sign of the real and imaginary parts of …

Optical characterization of a nanofiber immersed in a Raman liquid Open

Maha Bouhadida, Abderrahim Azzoune, Philippe Delaye, Nicolas Dubreuil, Gilles Pauliat , et al. · 2018

National audience

Projet Cors’Expé kiwis et clémentines : réduction des intrants phytosanitaires en vergers de kiwis et de clémentines en Corse. Open

Nicolas Dubreuil, M.-M Ottomani, Gilles Tison, Philippe Kreiter · 2018

The Ecophyto project mobilized all partners in the Corsica region through a project called Déphy EXPE, aimed at reducing plant protection inputs on three major crops for Corsica, clementine, kiwi and vines. This objective involves research…

Nonlinear Properties of Ge-rich Si1−xGex Materials with Different Ge Concentrations Open

Samuel Serna, Vladyslav Vakarin, Joan Manel Ramírez, Jacopo Frigerio, Andrea Ballabio , et al. · 2017

Lowering backward Raman and Brillouin scattering in waveguide Raman wavelength converters Open

Min Châu Phan Huy, Philippe Delaye, Gilles Pauliat, Nicolas Dubreuil, Frédéric Gérôme , et al. · 2017

Background Liquid filled hollow core fiber Raman wavelength converters are devices enabling to red-shift the wavelength of laser beams delivered by either fixed wavelength or tunable lasers. Most of the reported converters operate in a pul…

Third Order Nonlinear Optical Properties of Ge-Rich SiGe Waveguides (Orale) Open

Samuel Serna, Vladyslav Vakarin, Joan Manel Ramírez, Xavier Le Roux, Jacopo Frigerio , et al. · 2017

International audience

Bi-directional top-hat D-Scan: single beam accurate characterization of nonlinear waveguides Open

Samuel Serna, Nicolas Dubreuil · 2017

The characterization of a third-order nonlinear integrated waveguide is reported for the first time by means of a top-hat dispersive-scan (D-Scan) technique, a temporal analog of the top-hat Z-Scan. With a single laser beam, and by carryin…

Nonlinear properties of Ge-rich SiGe waveguides (Orale) Open

Samuel Serna, Vladyslav Vakarin, Joan Manel Ramírez, Jacopo Frigerio, Andrea Ballabio , et al. · 2017

We report the first third order nonlinear characterization of Ge-rich Si 1-x Ge x waveguides, with Germanium concentrations ranging from 0.7 to 0.9. A bi-directional top hat D-Scan method was used to determine the waveguide nonlinear param…

Enhanced nonlinear interaction in a microcavity under coherent excitation Open

Samuel Serna, Jérèmy Oden, Marc Hanna, Charles Caër, Xavier Le Roux , et al. · 2015

The large field enhancement that can be achieved in high quality factor and small mode volume photonic crystal microcavities leads to strengthened nonlinear interactions. However, the frequency shift dynamics of the cavity resonance under …

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