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283 results on '"Auguste, Jean-Louis"'

1. Spatial beam self-cleaning in multimode lanthanum aluminum silicate glass fiber

Author

Guénard, Romain, Krupa, Katarzyna, Tonello, Alessandro, Fabert, Marc, Auguste, Jean Louis, Humbert, Georges, Leparmentier, Stéphanie, Duclère, Jean-René, Chenu, Sébastien, Delaizir, Gaëlle, Millot, Guy, Modotto, Daniele, Wabnitz, Stefan, and Couderc, Vincent

Subjects
Physics - Optics
Abstract

We demonstrated that spatial Kerr beam self-cleaning can be obtained in a highly multimode multicomponent optical fiber based on lanthanum aluminum silicate oxide glasses (SiO2-Al2O3-La2O3), which was made by using the modified powder in tube technology (MIPT). We show how such fabrication method can provide interesting potentialities to design doped multimode optical fibers with homogeneous and quasi-parabolic refractive-index core profile for nonlinear optics applications., Comment: 6 pages, 6 figures

Published
2019
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4. A Photo‐Thermoelectric Twist to Wireless Energy Transfer: Radial Flexible Thermoelectric Device Powered by a High‐Power Laser Beam

Author

Maia, Margarida, primary, Pires, Ana L., additional, Rocha, Mariana, additional, Ferreira‐Teixeira, Sofia, additional, Robalinho, Paulo, additional, Frazão, Orlando, additional, Furtado, Cristina, additional, Califórnia, António, additional, Machado, Vasco, additional, Bogas, Sarah, additional, Ferreira, César, additional, Machado, João, additional, Sousa, Luís, additional, Luis, Uxia G., additional, San-Juan, Alejandro M. G., additional, Crespo, Pedro O., additional, Medina, Fermin N., additional, Sande, Carlos U., additional, Marino, Alejandro C., additional, González, Guillermo R., additional, Pereira, Andreia T., additional, Agelet, Fernando A., additional, Jamier, Raphael, additional, Roy, Philippe, additional, Leconte, Baptiste, additional, Auguste, Jean‐Louis, additional, and Pereira, André M., additional

Published
2023
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10. Modal analysis and experimental study of multimode graded-index microstructured fibres for highly efficient supercontinuum generation

Author

Mullackalparampu Abdul Jabbar, Fathima Shabana, Tombelaine, Vincent, Huss, Guillaume, Ghosh, Amar Nath, Sylvestre, Thibaut, Auguste, Jean-Louis, Reynaud, François, Leproux, Philippe, and Femto-st, Optique

Subjects
[PHYS.PHYS.PHYS-OPTICS] Physics [physics]/Physics [physics]/Optics [physics.optics]
Abstract

Microstructured optical fibres (MOFs), also known as Photonic Crystal Fibres (PCFs) or Holey Fibres (HFs), play an important role in supercontinuum generation because of their high nonlinearity and ability to tailor the dispersion profile. Nowadays, studies have extended to the multimode environment to enhance spectral broadening by taking advantage of various intermodal nonlinear effects. Recently, it has been shown that these types of fibres can also be able to provide spatially cleaned output beams through a novel nonlinear spatial effect called Kerr-induced beam self-cleaning (KBSC), which makes these fibres suitable for a variety of multimode-based applications. In this paper, a full modal analysis of germanium (Ge)-doped graded-index multimode PCFs with different geometrical sizes is provided. The influence of fibre size on modal properties, such as effective refractive index, birefringence and dispersion, was investigated using the finite element method. It was found that the changes in the geometric parameters can significantly affect the modal properties and then the frequency generation and spectral broadening. Experimentally, high-efficiency frequency generation with different frequency detunings was obtained in a short length of each PCF by launching input pulses at 1064 nm pump wavelength. For longer fibre length and high input power, supercontinuum generation with improved broadening from visible to near IR by intermodal four-wave mixing and stimulated Raman scattering was observed in all PCFs. A study of the effect of input peak power, input polarization axis and fibre length on supercontinuum spectrum is presented. Experimental evidence of the KBSC effect as a function of various fibre and laser parameters is also reported. The evolution of spatial output beam pattern from higher-order mode to fundamental mode with low-peak-power self-cleaning threshold was observed for all the fibres by launching a 1064 nm pump laser with 1 ns pulse duration.

Published
2022

12. Kerr beam self-cleaning and supercontinuum generation in a graded-index few-mode photonic crystal fiber

Author

Fathima Shabana, M. A, primary, Tombelaine, Vincent, additional, Huss, Guillaume, additional, Nath Ghosh, Amar, additional, Sylvestre, Thibaut, additional, Auguste, Jean-Louis, additional, Fabert, Marc, additional, Tonello, Alessandro, additional, Couderc, Vincent, additional, Reynaud, Francois, additional, and Leproux, Philippe, additional

Published
2021
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22. Development of highly reliable SERS‐active photonic crystal fiber probe and its application in the detection of ovarian cancer biomarker in cyst fluid

Author

Beffara, Flavien, primary, Perumal, Jayakumar, additional, Puteri Mahyuddin, Aniza, additional, Choolani, Mahesh, additional, Khan, Saif A., additional, Auguste, Jean‐Louis, additional, Vedraine, Sylvain, additional, Humbert, Georges, additional, Dinish, U. S., additional, and Olivo, Malini, additional

Published
2019
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24. Spatial beam self-cleaning in multimode lanthanum aluminum silicate glass fiber

Author

Guénard, Romain, primary, Krupa, Katarzyna, additional, Tonello, Alessandro, additional, Fabert, Marc, additional, Auguste, Jean-Louis, additional, Humbert, Georges, additional, Leparmentier, Stéphanie, additional, Duclère, Jean-René, additional, Chenu, Sébastien, additional, Delaizir, Gaëlle, additional, Millot, Guy, additional, Modotto, Daniele, additional, Wabnitz, Stefan, additional, and Couderc, Vincent, additional

Published
2019
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28. DEVELOPPEMENTS DE FIBRES OPTIQUES DOPEES AVEC DES PARTICULES DE PALLADIUM POUR LA REALISATION DE CAPTEURS ROBUSTES D’HYDROGENE

Author

Aazi, Mohamed, Kudinova, Maryna, Kinet, Damien, Humbert, Georges, Auguste, Jean-Louis, Megret, Patrice, Delepine Lesoille, Sylvie, Photonique Fibre et Sources Cohérentes (XLIM-PHOT), XLIM (XLIM), Université de Limoges (UNILIM)-Centre National de la Recherche Scientifique (CNRS)-Université de Limoges (UNILIM)-Centre National de la Recherche Scientifique (CNRS), PHOTONIQUE (XLIM-PHOTONIQUE), Service d'Electromagnétisme et de Télécommunications [Mons], Université de Mons (UMons), PHOTONIQUE, University of Mons [Belgium] (UMONS), Agence Nationale pour la Gestion des Déchets Radioactifs (ANDRA), and Humbert, Georges

Subjects
[SPI.OPTI] Engineering Sciences [physics]/Optics / Photonic, [SPI.OPTI]Engineering Sciences [physics]/Optics / Photonic, ComputingMilieux_MISCELLANEOUS
Abstract

International audience

Published
2019

29. PCF and new materials for optical fibres : 20 years of technological developments

Author

Auguste, Jean-Louis, Humbert, Georges, Jamier, Raphaël, Roy, Philippe, Photonique Fibre et Sources Cohérentes (XLIM-PHOT), XLIM (XLIM), Université de Limoges (UNILIM)-Centre National de la Recherche Scientifique (CNRS)-Université de Limoges (UNILIM)-Centre National de la Recherche Scientifique (CNRS), and Jamier, Raphael

Subjects
[PHYS.PHYS.PHYS-OPTICS] Physics [physics]/Physics [physics]/Optics [physics.optics], [PHYS.PHYS.PHYS-OPTICS]Physics [physics]/Physics [physics]/Optics [physics.optics], ComputingMilieux_MISCELLANEOUS
Abstract

International audience

Published
2019

30. SERS‐Active Photonic Crystal Fiber Probe: Towards Next Generation Liquid Biopsy Sensor with Ultra High Sensitivity

Author

Dinish, U., Beffara, Flavien, Humbert, Georges, Auguste, Jean-Louis, Olivo, Malini, Singapore Bioimaging Consortium [Singapore] (SBIC), Agency for science, technology and research [Singapore] (A*STAR), Photonique Fibre et Sources Cohérentes (XLIM-PHOT), XLIM (XLIM), Université de Limoges (UNILIM)-Centre National de la Recherche Scientifique (CNRS)-Université de Limoges (UNILIM)-Centre National de la Recherche Scientifique (CNRS), Singapore Bioimaging Consortium (SBIC), A*STAR, Singapore, and Agency for science, technology and research [Singapore] (A*STAR)-Agency for science, technology and research [Singapore] (A*STAR)

Subjects
[PHYS.PHYS.PHYS-OPTICS]Physics [physics]/Physics [physics]/Optics [physics.optics], ComputingMilieux_MISCELLANEOUS
Abstract

International audience

Published
2019

31. SERS-active photonic crystal fiber probe: towards next generation biopsy needle

Author

Dinish, U., Humbert, Georges, Perumal, Jayakumar, Beffara, Flavien, Auguste, Jean-Louis, Vedraine, Sylvain, Khan, Saif, Mahyuddin, Aniza, Choolani, Mahesh, Olivo, Malini, Singapore Bioimaging Consortium [Singapore] (SBIC), Agency for science, technology and research [Singapore] (A*STAR), Photonique Fibre et Sources Cohérentes (XLIM-PHOT), XLIM (XLIM), Université de Limoges (UNILIM)-Centre National de la Recherche Scientifique (CNRS)-Université de Limoges (UNILIM)-Centre National de la Recherche Scientifique (CNRS), RF-ELITE : RF-Electronique Imprimée pour les Télécommunications et l'Energie (XLIM-RFEI), National University of Singapore (NUS), Experimental Fetal Medicine Group [Singapore], National University of Singapore (NUS)-Yong Loo Lin School of Medicine [Singapore], Singapore Bioimaging Consortium (SBIC), A*STAR, Singapore, Agency for science, technology and research [Singapore] (A*STAR)-Agency for science, technology and research [Singapore] (A*STAR), and Jamier, Raphael

Subjects
[PHYS.PHYS.PHYS-OPTICS] Physics [physics]/Physics [physics]/Optics [physics.optics], [PHYS.PHYS.PHYS-OPTICS]Physics [physics]/Physics [physics]/Optics [physics.optics], ComputingMilieux_MISCELLANEOUS
Abstract

International audience

Published
2019

32. Suspended-core fiber based Sagnac interferometer device and sensing applications

Author

Zheng, Yu, Shum, Perry Ping, Luo, Yiyang, Zhang, Yanan, Wu, Zhifang, Auguste, Jean-Louis, Humbert, Georges, School of Electrical and Electronic Engineering, Nanyang Technological University, Singapore, Department of Chemistry, University of Kansas [Lawrence] (KU), School of Electrical and Electronic Engineering (EEE), Nanyang Technological University [Singapour], Photonique Fibre et Sources Cohérentes (XLIM-PHOT), XLIM (XLIM), and Université de Limoges (UNILIM)-Centre National de la Recherche Scientifique (CNRS)-Université de Limoges (UNILIM)-Centre National de la Recherche Scientifique (CNRS)

Subjects
010309 optics, 0303 health sciences, 03 medical and health sciences, [PHYS.PHYS.PHYS-OPTICS]Physics [physics]/Physics [physics]/Optics [physics.optics], 0103 physical sciences, 01 natural sciences, ComputingMilieux_MISCELLANEOUS, 030304 developmental biology
Abstract

International audience

Published
2019

34. Novel design of optical fiber for sensing analytes

Author

U. S, Dinish, Olivo, M., Humbert, Georges, Beffara, Flavien, Auguste, Jean-Louis, Photonique Fibre et Sources Cohérentes (XLIM-PHOT), XLIM (XLIM), and Université de Limoges (UNILIM)-Centre National de la Recherche Scientifique (CNRS)-Université de Limoges (UNILIM)-Centre National de la Recherche Scientifique (CNRS)

Subjects
[PHYS.PHYS.PHYS-OPTICS]Physics [physics]/Physics [physics]/Optics [physics.optics]
Published
2018

35. SERS based specialty optical fiber probe for bio-sensing

Author

Beffara, Flavien, Humbert, Georges, Auguste, Jean-Louis, Vedraine, Sylvain, U.S, Dinish, Olivo, Malini, Photonique Fibre et Sources Cohérentes (XLIM-PHOT), XLIM (XLIM), Université de Limoges (UNILIM)-Centre National de la Recherche Scientifique (CNRS)-Université de Limoges (UNILIM)-Centre National de la Recherche Scientifique (CNRS), PHOTONIQUE, RF-ELITE : RF-Electronique Imprimée pour les Télécommunications et l'Energie (XLIM-RFEI), Singapore Bioimaging Consortium (SBIC), A*STAR, Singapore, Singapore Bioimaging Consortium [Singapore] (SBIC), and Agency for science, technology and research [Singapore] (A*STAR)-Agency for science, technology and research [Singapore] (A*STAR)

Subjects
[SPI.OPTI]Engineering Sciences [physics]/Optics / Photonic, ComputingMilieux_MISCELLANEOUS
Abstract

International audience

Published
2018

40. SYSTEME DE MESURES D'HYDROGENE FONDE SUR DES FIBRES OPTIQUES BIREFRINGENTES

Author

Humbert, Georges, Kudinova, Maryna, Auguste, Jean-Louis, Delepine Lesoille, Sylvie, Photonique Fibre et Sources Cohérentes (XLIM-PHOT), XLIM (XLIM), Université de Limoges (UNILIM)-Centre National de la Recherche Scientifique (CNRS)-Université de Limoges (UNILIM)-Centre National de la Recherche Scientifique (CNRS), and Agence Nationale pour la Gestion des Déchets Radioactifs (ANDRA)

Subjects
[PHYS.PHYS.PHYS-OPTICS]Physics [physics]/Physics [physics]/Optics [physics.optics]
Published
2017

42. Optofluidic Sensing With A Side‐channel Photonic Crystal Fiber Based Sagnac Interferometer

Author

Zhang, Nan, Li, Kaiwei, Humbert, Georges, Shum, Perry Ping, Wu, Zhifang, Zhang, Ting, Cui, Ying, Dinh, Xuan Quyen, Auguste, Jean-Louis, Wei, Lei, School of Electrical and Electronic Engineering (EEE), Nanyang Technological University [Singapour], PHOTONIQUE, XLIM (XLIM), Université de Limoges (UNILIM)-Centre National de la Recherche Scientifique (CNRS)-Université de Limoges (UNILIM)-Centre National de la Recherche Scientifique (CNRS), Photonique Fibre et Sources Cohérentes (XLIM-PHOT), School of Electrical and Electronic Engineering, Nanyang Technological University, Singapore, CNRS International NTU THALES Research Alliance (UMI CINTRA), THALES-Nanyang Technological University [Singapour]-Centre National de la Recherche Scientifique (CNRS), CINTRA CNRS/NTU/THALES, UMI 3288, and Humbert, Georges

Subjects
[SPI.OPTI] Engineering Sciences [physics]/Optics / Photonic, [SPI.OPTI]Engineering Sciences [physics]/Optics / Photonic, ComputingMilieux_MISCELLANEOUS
Abstract

International audience

Published
2017

43. ÉLABORATION DE FIBRES VITROCÉRAMIQUES SIO2-MGSIO3 PAR LE PROCÉDÉ POUDRE MODIFIÉ

Author

Kudinova, Maryna, Passelergue, Armaud, Cochain, Léo, Leparmentier, Stéphanie, Delaizir, Gaëlle, Humbert, Georges, Auguste, Jean-Louis, Joly, Quentin, Hory, Arnaud, PHOTONIQUE (XLIM-PHOTONIQUE), XLIM (XLIM), Université de Limoges (UNILIM)-Centre National de la Recherche Scientifique (CNRS)-Université de Limoges (UNILIM)-Centre National de la Recherche Scientifique (CNRS), Photonique Fibre et Sources Cohérentes (XLIM-PHOT), Cerinnov, PHOTONIQUE, IRCER - Axe 3 : organisation structurale multiéchelle des matériaux (IRCER-AXE3), Institut de Recherche sur les CERamiques (IRCER), Institut des Procédés Appliqués aux Matériaux (IPAM), Université de Limoges (UNILIM)-Université de Limoges (UNILIM)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS)-Institut des Procédés Appliqués aux Matériaux (IPAM), Université de Limoges (UNILIM)-Université de Limoges (UNILIM)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS), and Humbert, Georges

Subjects
[SPI.OPTI] Engineering Sciences [physics]/Optics / Photonic, [SPI.OPTI]Engineering Sciences [physics]/Optics / Photonic, ComputingMilieux_MISCELLANEOUS
Abstract

International audience

Published
2017

44. BENT LONG PERIOD FIBER GRATINGS FOR REFRACTIVE INDEX SENSING

Author

RUSU, Alecsandra, Humbert, Georges, Auguste, Jean-Louis, Szolga, Lorant, PHOTONIQUE, XLIM (XLIM), Université de Limoges (UNILIM)-Centre National de la Recherche Scientifique (CNRS)-Université de Limoges (UNILIM)-Centre National de la Recherche Scientifique (CNRS), and Photonique Fibre et Sources Cohérentes (XLIM-PHOT)

Subjects
[SPI.OPTI]Engineering Sciences [physics]/Optics / Photonic, ComputingMilieux_MISCELLANEOUS
Abstract

International audience

Published
2017

45. Laser bi-fréquences à fibre dopée thulium

Author

Sabra, Mostafa, Dauliat, Romain, Darwich, Dia, Humbert, Georges, Jamier, Raphaël, Auguste, Jean-Louis, Roy, Philippe, Photonique Fibre et Sources Cohérentes (XLIM-PHOT), XLIM (XLIM), and Université de Limoges (UNILIM)-Centre National de la Recherche Scientifique (CNRS)-Université de Limoges (UNILIM)-Centre National de la Recherche Scientifique (CNRS)

Subjects
[PHYS.PHYS.PHYS-OPTICS]Physics [physics]/Physics [physics]/Optics [physics.optics], ComputingMilieux_MISCELLANEOUS
Abstract

International audience

Published
2017

46. Hollow-core terahertz waveguides based on photonic bandgap

Author

Humbert, Georges, Auguste, Jean-Louis, Photonique Fibre et Sources Cohérentes (XLIM-PHOT), XLIM (XLIM), and Université de Limoges (UNILIM)-Centre National de la Recherche Scientifique (CNRS)-Université de Limoges (UNILIM)-Centre National de la Recherche Scientifique (CNRS)

Subjects
[PHYS.PHYS.PHYS-OPTICS]Physics [physics]/Physics [physics]/Optics [physics.optics], ComputingMilieux_MISCELLANEOUS
Abstract

International audience

Published
2017

47. Fibre optique, procédé de fabrication d’une telle fibre optique et dispositif de mesure destiné à la détection d’hydrogène équipé d’une telle fibre optique

Author

Leparmentier, Stéphanie, Delepine Lesoille, Sylvie, Auguste, Jean-Louis, Humbert, Georges, Photonique Fibre et Sources Cohérentes (XLIM-PHOT), XLIM (XLIM), Université de Limoges (UNILIM)-Centre National de la Recherche Scientifique (CNRS)-Université de Limoges (UNILIM)-Centre National de la Recherche Scientifique (CNRS), and Agence Nationale pour la Gestion des Déchets Radioactifs (ANDRA)

Subjects
[PHYS.PHYS.PHYS-OPTICS]Physics [physics]/Physics [physics]/Optics [physics.optics]
Published
2016

48. Development of highly reliable SERS‐active photonic crystal fiber probe and its application in the detection of ovarian cancer biomarker in cyst fluid.

Author

Beffara, Flavien, Perumal, Jayakumar, Puteri Mahyuddin, Aniza, Choolani, Mahesh, Khan, Saif A., Auguste, Jean‐Louis, Vedraine, Sylvain, Humbert, Georges, Dinish, U. S., and Olivo, Malini

Abstract

Conventionally Surface‐enhanced Raman spectroscopy (SERS) is realized by adsorbing analytes onto nano‐roughened planar substrate coated with noble metals (silver or gold) or their colloidal nanoparticles (NPs). Nanoscale irregularities in such substrates/NPs could lead to SERS sensors with poor reproducibility and repeatability. Herein, we demonstrate a suspended core photonic crystal fiber (PCF) based SERS sensor with extremely high reproducibility and repeatability in measurement with a relative SD of only 1.5% and 4.6%, respectively, which makes it more reliable than any existing SERS sensor platforms. In addition, our platform could improve the detection sensitivity owing to the increased interaction area between the guided light and the analyte, which is incorporated into the holes that runs along the length of the PCF. Numerical calculation established the significance of the interplay between light coupling efficiency and evanescent field distribution, which could eventually determine the sensitivity and reliability of the developed SERS active‐PCF sensor. As a proof of concept, using this sensor, we demonstrated the detection of haptoglobin, a biomarker for ovarian cancer, contained within the ovarian cyst fluid, which facilitated in differentiating the stages of cancer. We envision that with necessary refinements, this platform could potentially be translated as a next‐generation highly sensitive SERS‐active opto‐fluidic biopsy needle for the detection of biomarkers in body fluids. [ABSTRACT FROM AUTHOR]

Published
2020
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