Dr. Guillaume Laffont Profile

Dr. Guillaume Laffont

Head of Optical Fiber Sensors Lab at Commissariat à l'Energie Atomique

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Author

Publications (23)

Proceedings Article | 20 June 2024 Presentation + Paper

High temperature behavior of femtosecond laser photo-inscribed micro-voids

Matilde Sosa Marti, Maxime Cavillon, Thomas Blanchet, Romain Cotillard, Guillaume Laffont, Matthieu Lancry

Proceedings Volume 13005, 130050N (2024) https://doi.org/10.1117/12.3017540

KEYWORDS: Fiber Bragg gratings, Thermal stability, Optical fibers, Femtosecond lasers

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Proceedings Article | 23 May 2023 Paper

High temperature measurements using femtosecond written FBGs of a titanium substrate under intense heat flow

E. Deliancourt, A. Lerner, K. Achour, A. Jolly, J.C. Le Pallec, A. Quet, C. Guérin, S. Hulin, G. Laffont

Proceedings Volume 12643, 126432Q (2023) https://doi.org/10.1117/12.2678402

KEYWORDS: Fiber Bragg gratings, Temperature metrology, Titanium, Coating, Sensors, Femtosecond phenomena

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Proceedings Article | 23 May 2023 Paper

High temperature annealing behavior of femtosecond written FBGs in Ge-doped fused silica optical fibers

A. Lerner, T. Blanchet, R. Cotillard, M. Sosa, N. Roussel, G. Bouwmans, G. Laffont

Proceedings Volume 12643, 1264331 (2023) https://doi.org/10.1117/12.2678399

KEYWORDS: Fiber Bragg gratings, Annealing, Silica, Optical fibers, Glasses, Femtosecond phenomena, Bragg wavelengths, Thermal stability, Quenching, Temperature metrology

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Proceedings Article | 23 May 2023 Paper

Packaged sapphire fiber Bragg gratings ability to withstand temperature up to 1500°C

T. Blanchet, S. Magne, G. Laffont

Proceedings Volume 12643, 126432O (2023) https://doi.org/10.1117/12.2678533

KEYWORDS: Temperature metrology, Annealing, Sapphire, Fiber Bragg gratings, Bragg wavelengths, Capillaries, Sensors, Reflection, Packaging, Optical gratings

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Proceedings Article | 14 March 2023 Presentation + Paper

Compact fiber optic spectrometers formed by chirped diffraction gratings inscribed with a femtosecond laser platform

Jean-Baptiste Quélène, Matilde Sosa Martí, Romain Cotillard, Guillaume Laffont

Proceedings Volume 12417, 1241708 (2023) https://doi.org/10.1117/12.2648049

KEYWORDS: Optical gratings, Fiber Bragg gratings, Spectrometers, Diffraction gratings, Femtosecond phenomena, Cameras, Fiber optics, Sensors, Antennas, Fabrication

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Proceedings Article | 20 May 2022 Presentation + Paper

Experimental study of a tunable hybrid III-V-on-silicon laser for spectral characterization of fiber Bragg grating sensors

Jean-Baptiste Quélène, Didier Pohl, David Bitauld, Karim Hassan, Guillaume Laffont

Proceedings Volume 12141, 1214105 (2022) https://doi.org/10.1117/12.2621213

KEYWORDS: Fiber Bragg gratings, Modulation, Tunable lasers, Sensors, Semiconductor lasers, Fiber optics sensors, Wavelength division multiplexing, Photonic integrated circuits, Diodes, Structural health monitoring

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Proceedings Article | 17 May 2022 Presentation + Paper

Effect of radiation and temperature on high temperature resistant fiber Bragg gratings

Thomas Blanchet, Romain Cotillard, Adriana Morana, Rudy Desmarchelier, Emmanuel Marin, Youcef Ouerdane, Aziz Boukenter, Damien Fourmentel, Stéphane Bréaud, Andrei Gussarov, Christophe Destouches, Sylvain Girard, Guillaume Laffont

Proceedings Volume 12139, 1213914 (2022) https://doi.org/10.1117/12.2621473

KEYWORDS: Fiber Bragg gratings, Radiation effects, X-rays, Femtosecond phenomena, Annealing, Sensors, Refractive index, Reflectivity, Temperature sensors, Structured optical fibers

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Proceedings Article | 23 April 2017 Paper

Radiation effects on type I fiber Bragg gratings: influence of recoating

T. Blanchet, G. Laffont, R. Cotillard, E. Marin, A. Morana, A. Boukenter, Y. Ouerdane, S. Girard

Proceedings Volume 10323, 103232E (2017) https://doi.org/10.1117/12.2263290

KEYWORDS: Fiber Bragg gratings, X-rays, Coating, Temperature metrology, Radiation effects, Annealing, Temperature sensors, Tolerancing, Fiber optics sensors, Refractive index

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Proceedings Article | 23 April 2017 Paper

Monitoring of single-mode fiber laser heating using Rayleigh scattering and first order fs-PbP fiber Bragg grating

Rudy Desmarchelier, Romain Cotillard, Nicolas Roussel, Steven Armiroli, Guillaume Laffont

Proceedings Volume 10323, 103238N (2017) https://doi.org/10.1117/12.2265795

KEYWORDS: Gas lasers, Annealing, Carbon monoxide, Optical fibers, Sensors, Fiber Bragg gratings, Single mode fibers, Fiber lasers, Laser scattering, Plasma

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Proceedings Article | 29 April 2016 Paper

High temperature measurements in irradiated environment using Raman fiber optics distributed temperature sensing

Pierre Lecomte, Sylvain Blairon, Didier Boldo, Frédéric Taillade, Matthieu Caussanel, Gwendal Beauvois, Hervé Duval, Stéphane Grieu, Guillaume Laffont, Frédéric Lainé, Frédéric Carrel

Proceedings Volume 9899, 98991C (2016) https://doi.org/10.1117/12.2219174

KEYWORDS: Temperature metrology, High temperature raman spectroscopy, Environmental sensing, Raman spectroscopy, Fiber optics sensors, Coating, Signal attenuation, Raman scattering, Temperature sensors, Fiber coatings, Temperature metrology, High temperature raman spectroscopy, Environmental monitoring, Optical fibers, Gold, Photodiodes, Fiber optics tests

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Proceedings Article | 2 June 2014 Paper

Distributed temperature monitoring for liquid sodium leakage detection using OFDR-based Rayleigh backscattering

E. Boldyreva, R. Cotillard, G. Laffont, P. Ferdinand, D. Cambet, J.-P. Jeannot, P. Charvet, S. Albaladéjo, G. Rodriguez

Proceedings Volume 9157, 91576N (2014) https://doi.org/10.1117/12.2059531

KEYWORDS: Sodium, Liquids, Backscatter, Optical fibers, Spatial resolution, Temperature metrology, Structured optical fibers, Refractive index, Cladding, Gold

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Proceedings Article | 2 June 2014 Paper

Regeneration of tilted fiber Bragg gratings

R. Cotillard, G. Laffont, P. Ferdinand

Proceedings Volume 9157, 91572S (2014) https://doi.org/10.1117/12.2059285

KEYWORDS: Fiber Bragg gratings, Cladding, Signal attenuation, Annealing, Optical fibers, Refractive index, Manufacturing, Sensors, Environmental sensing, Mirrors

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Proceedings Article | 15 October 2013 Paper

Optical fiber sensors to improve the safety of nuclear power plants

P. Ferdinand, S. Magne, G. Laffont

Proceedings Volume 8924, 89242G (2013) https://doi.org/10.1117/12.2033922

KEYWORDS: Safety, Fiber Bragg gratings, Buildings, Sensors, Fiber optics sensors, Power supplies, Raman spectroscopy, Remote sensing, Flame detectors, Multiplexing

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Proceedings Article | 20 May 2013 Paper

9000 hours-long high temperature annealing of regenerated fiber Bragg gratings

G. Laffont, R. Cotillard, P. Ferdinand

Proceedings Volume 8794, 87941X (2013) https://doi.org/10.1117/12.2025838

KEYWORDS: Fiber Bragg gratings, Annealing, Reflectivity, Temperature metrology, Sensors, Capillaries, Optical fibers, Technetium, Environmental sensing, Metrology

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Proceedings Article | 20 May 2013 Paper

Real-time distributed measurement of detonation velocities inside high explosives with the help of chirped fiber Bragg gratings

Sylvain Magne, Alexandre Lefrançois, Jérome Luc, Guillaume Laffont, Pierre Ferdinand

Proceedings Volume 8794, 87942K (2013) https://doi.org/10.1117/12.2025986

KEYWORDS: Velocity measurements, Explosives, Interfaces, Fiber Bragg gratings, Polishing, Spatial resolution, Calibration, Signal to noise ratio, Optical filters, Manufacturing

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Proceedings Article | 17 October 2012 Paper

Multiplexed regenerated Fiber Bragg Gratings for high temperature measurement

G. Laffont, R. Cotillard, P. Ferdinand

Proceedings Volume 8421, 842123 (2012) https://doi.org/10.1117/12.970624

KEYWORDS: Fiber Bragg gratings, Multiplexing, Temperature metrology, Calibration, Reflectivity, Transducers, Annealing, Capillaries, Metrology, Optical fibers

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Proceedings Article | 5 October 2009 Paper

Innovative FBG sensing techniques for the railway industry: application to overhead contact line monitoring

Guillaume Laffont, Nicolas Roussel, Stéphane Rougeault, Jonathan Boussoir, Laurent Maurin, Pierre Ferdinand

Proceedings Volume 7503, 75035K (2009) https://doi.org/10.1117/12.835346

KEYWORDS: Fiber Bragg gratings, Sensors, Inspection, Interfaces, Optical fibers, Transducers, Calibration, 3D metrology, Remote sensing, Channel projecting optics

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Proceedings Article | 16 May 2008 Paper

Tilted fibre Bragg gratings for the specific detection of biological species

Séverine Maguis, Guillaume Laffont, Pierre Ferdinand, Marie-C. Millot, Khémara Kham, Sébastien Péralta

Proceedings Volume 7004, 70043X (2008) https://doi.org/10.1117/12.786044

KEYWORDS: Refractive index, Sensors, Fiber Bragg gratings, Proteins, Biosensors, Optical fibers, Atomic force microscopy, Decision support systems, Cladding, Fourier transforms

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Proceedings Article | 2 July 2007 Paper

Temperature compensation technique for Bragg gratings in microstructured optical fibers for sensing applications

Minh Châu Phan Huy, Guillaume Laffont, Véronique Dewynter, Pierre Ferdinand, Dominique Pagnoux, Philippe Roy, Bernard Dussardier, Wilfried Blanc

Proceedings Volume 6619, 661930 (2007) https://doi.org/10.1117/12.738578

KEYWORDS: Fiber Bragg gratings, Micro optical fluidics, Refractive index, Liquids, Silica, Temperature metrology, Structured optical fibers, Optical sensing, Wavelength division multiplexing, Thermal sensing

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Proceedings Article | 23 May 2005 Paper

Wavelength tunable fiber ring laser for high-speed interrogation of fiber Bragg grating sensors

Guillaume Laffont, N. Roussel, L. Maurin, J. Boussoir, B. Clogenson, L. Auger, Sylvain Magne, Pierre Ferdinand

Proceedings Volume 5855, (2005) https://doi.org/10.1117/12.623442

KEYWORDS: Fiber Bragg gratings, Fiber lasers, Sensors, Tunable lasers, Optical filters, Actuators, Mirrors, Absorption, Michelson interferometers, Interferometers

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Proceedings Article | 23 May 2005 Paper

Fiber Bragg grating photowriting in microstructured optical fibers for sensing application based on refractive index measurement

M. Phan Huy, Guillaume Laffont, Veronique Dewynter-Marty, Pierre Ferdinand, P. Roy, J.-M. Blondy, D. Pagnoux, W. Blanc, B. Dussardier

Proceedings Volume 5855, (2005) https://doi.org/10.1117/12.623501

KEYWORDS: Fiber Bragg gratings, Refractive index, Structured optical fibers, Micro optical fluidics, Liquids, Optical sensing, Spectral resolution, Sensors, Design for manufacturability, Optics manufacturing

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Proceedings Article | 23 May 2005 Paper

Microstructured fibers for sensing applications

D. Pagnoux, S. Fevrier, P. Leproux, M. Phan Huy, A. Pryamikov, P. Viale, V. Tombelaine, V. Couderc, P. Roy, J. Auguste, J.-M. Blondy, Guillaume Laffont, V. Dewinter-Marty, Pierre Ferdinand, B. Dussardier, W. Blanc

Proceedings Volume 5855, (2005) https://doi.org/10.1117/12.623251

KEYWORDS: Optical fibers, Sensors, Micro optical fluidics, Liquids, Cladding, Waveguides, Manufacturing, Solids, Visible radiation, Fiber Bragg gratings

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Proceedings Article | 9 November 2000 Paper

Fiber Bragg grating-induced coupling to cladding modes for refractive index measurements

G. Laffont

Proceedings Volume 4185, 41854V (2000) https://doi.org/10.1117/12.2302318

KEYWORDS: Refractive index, Cladding, Fiber Bragg gratings, Signal attenuation, Liquids, Fiber couplers, Metrology, Information operations, Algorithm development, Refractometry

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Showing 5 of 23 publications

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