Dr. Georges J. Humbert Profile

Dr. Georges J. Humbert

at XLIM

SPIE Involvement:

Author

Publications (25)

Proceedings Article | 13 March 2024 Presentation

Advanced biosensing method through fluorescence enhancement using photonic crystal fiber as optofluidic platform

Baptiste Moeglen Paget, Jayakumar Perumal, Georges Humbert, Dinish U.S., Malini Olivo

Proceedings Volume PC12835, PC1283509 (2024) https://doi.org/10.1117/12.3001397

KEYWORDS: Fluorescence, Photonic crystal fibers, Optofluidics, Nanoparticles, Biosensing, Biomedical applications, Dyes, Solids, Signal to noise ratio, Plasmonics

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Proceedings Article | 6 March 2023 Presentation

Reliable and easy-to-use SERS spectroscopy platform based on a tapered opto-fluidic photonic crystal fiber

Amine Benazza, Flavien Beffara, Jean-Louis Auguste, Dinish U.S., Malini Olivo, Georges Humbert

Proceedings Volume PC12372, PC1237203 (2023) https://doi.org/10.1117/12.2651644

KEYWORDS: Surface enhanced Raman spectroscopy, Optofluidics, Photonic crystal fibers, Reliability, Raman spectroscopy, Target detection, Spectroscopy, Biosensing, Raman scattering, Plasmonics

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Proceedings Article | 6 March 2023 Presentation

Ring core fiber: a novel design of PCF for SERS sensing

Flavien Beffara, Georges Humbert, Jean-Louis Auguste, Dinish U.S, Malini Olivo

Proceedings Volume PC12372, PC123720A (2023) https://doi.org/10.1117/12.2651533

KEYWORDS: Surface enhanced Raman spectroscopy, Reliability, Sensors, Nanostructures, Liquids, Waveguides, Raman spectroscopy, Photonic crystal fibers, Optofluidics, Optical fibers

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Proceedings Article | 18 April 2021 Poster + Presentation + Paper

Determination of group and phase birefringence dispersion of Hi-Bi optical fiber using a broadband light source

N. Tarjányi, D. Káčik, R. Jamier, G. Humbert, P. Roy, Jean-Louis Auguste

Proceedings Volume 11773, 1177316 (2021) https://doi.org/10.1117/12.2589113

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Proceedings Article | 14 April 2020 Presentation + Paper

Tunable fiber laser concepts in the 2µm spectral range for tunable dual wavelength emission

Tobias Tiess, Alexander Hartung, Martin Becker, Manfred Rothhardt, Romain Dauliat, Baptiste Leconte, Georges Humbert, Philippe Roy, Matthias Jäger

Proceedings Volume 11357, 1135714 (2020) https://doi.org/10.1117/12.2559948

KEYWORDS: Fiber lasers, Fiber Bragg gratings, Four wave mixing, Terahertz radiation, Q switching, Bragg cells, Optical amplifiers, Thulium, Tunable lasers, Fiber amplifiers

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Proceedings Article | 10 April 2020 Presentation + Paper

Temperature sensor based on selective liquid-filled twin-core photonic crystal fiber

Chenlu Wang, Perry Ping Shum, Dora Juan Juan Hu, Zhilin Xu, Shuhui Liu, Yongwei Zhu, Yu Zheng, Baocheng Li, Yang Chen, Weijun Tong, Yue Meng, Georges Humbert

Proceedings Volume 11354, 113542U (2020) https://doi.org/10.1117/12.2556997

KEYWORDS: Temperature sensors, Photonic crystal fibers, Optofluidics

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We experimentally demonstrated a temperature sensor by selectively infiltrating refractive index liquid (RIL) in the central air hole of a twin-core photonic crystal fiber (PCF). The selective liquid infiltration was realized by putting the PCF in the bulk liquid with its central air hole open for liquid infiltration using capillary effect. The rest of the air holes were covered by UV glue. The three-dimensional stage was used to translate the PCF, and a tapered SMF was used to transfer the UV glue to cover the air holes under the microscope. After UV glue was solidified by exposing the fiber end under the UV light, the PCF end was dipped into the RIL to fill the central air hole by capillary effect. Due to the large thermos-optic coefficient of the RIL, the RIL filled air channel would act as a liquid core whose core modes would be highly dependent on the ambient temperature. The core modes of the RIL filled core would be phase matched to the fundamental mode of the two solid cores. Therefore, the phase matching wavelengths for the mode coupling among the two solid cores of PCF and the liquid core were highly temperature sensitive. The resonant dips in the transmission spectrum were measured to estimate the temperature sensitivity. The experiment used a commercially available twin core PCF, and blocked all but the central airhole at one of the ends facets by UV glue (NOA81, Norland), the remaining open holes are infiltrated over a length of 10 cm by capillary force with fluid (Cargille Laboratories Inc. index-matching fluid, series A) that possesses a refractive index of 1.46 at 589.3nm, 25°C, and the thermal coefficient is – 0.000389 RIU/°C, which is around 10 times of that coefficient of silica. Any temperature induced changes will have an influence on the propagation properties because of the highly temperature response of the refractive index of the fluid. With a fiber cleaver, a 1.8 cm long PCF was then cut from the longer length of the partially liquid filled twin core PCF and then fusion spliced with SMFs at both ends to observe its transmission spectrum when the sample is heated. When the temperature increase to around 54°C, the liquid RI drops quickly to match that of silica, and a three parallel waveguide structure is formed, in which the central liquid waveguide have the same index value with the two solid core. Because of the small separation between adjacent waveguides, a strong mode-field overlap occurs, which leads to a significant enhancement of the coupling coefficient, therefore, light energy can be easily transferred between two solid cores and the liquid rod in a short coupling length. Thus, the transmission spectrum of the device contain two sets of interference fringe pattern, the large spectrum envelope originated from the interference between the three eigenmodes generated by three-parallel waveguide structure based on the mode coupling theory, and fine interference fringes generated by the interference between the higher order modes in one core. By tracking the dip wavelength shift of the large spectrum envelope, the sensor exhibited a high temperature sensitivity of up to 37.011 nm/°C within the temperature range from 53.8°C to 55°C due to the satisfaction of phase match condition, and maintain a high sensitivity of 19.681 nm/°C from 55°C to 58.2°C, which is benefit from the high thermal optic coefficient of the selectively filled liquid in the twin core PCF.

Proceedings Article | 27 September 2019 Paper

Hi-Bi optical fiber sensor for measuring small weight

Daniel Kacik, Norbert Tarjanyi, Ivan Martincek, Raphael Jamier, Georges Humbert, Philippe Roy, Jean-Louis Auguste

Proceedings Volume 11199, 111993L (2019) https://doi.org/10.1117/12.2539910

KEYWORDS: Sensors, Fiber optics sensors, Optical fibers, Polarization, Birefringence, Fiber Bragg gratings, Silica, Optical sensors, Interferometers, Light sources

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Proceedings Article | 17 November 2017 Open Access

New approaches in optical rotation sensing

S. Schwartz, G. Feugnet, B. Morbieu, N. El Badaoui, G. Humbert, F. Benabid, I. Fsaifes, F. Bretenaker

Proceedings Volume 10563, 105633Y (2017) https://doi.org/10.1117/12.2304190

KEYWORDS: Gyroscopes, Solid state lasers, Crystals, Laser crystals, Solid state physics, Mirrors, Solid state electronics, Fiber optic gyroscopes, Nd:YAG lasers, Laser scattering

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Proceedings Article | 24 February 2017 Presentation + Paper

Tunable THz metamaterials based on phase-changed materials (VO2) triggered by thermal and electrical stimuli

Aurelian Crunteanu, Georges Humbert, Jonathan Leroy, Laure Huitema, Jean-Christophe Orlianges, Annie Bessaudou

Proceedings Volume 10103, 101031H (2017) https://doi.org/10.1117/12.2251823

KEYWORDS: Terahertz radiation, Metamaterials, Vanadium, Dielectrics, Thermal effects, Electromagnetism, Reflection, Sapphire, Resonators, Transition metals, Modulation, Temperature metrology

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Proceedings Article | 28 September 2015 Paper

Study of the hydrogen influence on the acoustic velocity of single-mode fibers by Rayleigh and Brillouin backscattering measurements

S. Leparmentier, J. L. Auguste, G. Humbert, G. Pilorget, L. Lablonde, Sylvie Delepine-Lesoille

Proceedings Volume 9634, 963432 (2015) https://doi.org/10.1117/12.2194102

KEYWORDS: Optical fibers, Diffusion, Silica, Acoustics, Hydrogen, Single mode fibers, Refractive index, Rayleigh scattering, Scattering, Backscatter

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Proceedings Article | 2 May 2014 Paper

Palladium particles embedded into silica optical fibers for hydrogen gas detection

Stéphanie Leparmentier, Jean-Louis Auguste, Georges Humbert, Gaëlle Delaizir, Sylvie Delepine-Lesoille, Johan Bertrand, Stéphane Buschaert, Jocelyn Perisse, Jean Reynald Macé

Proceedings Volume 9128, 91280H (2014) https://doi.org/10.1117/12.2054303

KEYWORDS: Optical fibers, Palladium, Silica, Cladding, Hydrogen, Particles, Signal attenuation, Composites, Glasses, Sensors

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Proceedings Article | 11 March 2013 Paper

Study of lanthanum aluminum silicate glasses for passive and active optical fibers

K. Schuster, D. Litzkendorf, S. Grimm, J. Kobelke, A. Schwuchow, A. Ludwig, M. Leich, S. Jetschke, J. Dellith, J.-L. Auguste, S. Leparmentier, G. Humbert, G. Werner

Proceedings Volume 8621, 86210Q (2013) https://doi.org/10.1117/12.2004011

KEYWORDS: Glasses, Silica, Ytterbium, Fiber lasers, Lanthanum, Structured optical fibers, Cladding, Supercontinuum generation, Aluminum, Absorption

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Proceedings Article | 1 March 2011 Paper

Low loss and broadband hollow-core photonic crystal fibers

Y. Y. Wang, F. Gerome, G. Humbert, J. M. Blondy, F. Benabid

Proceedings Volume 7946, 79460X (2011) https://doi.org/10.1117/12.881559

KEYWORDS: Cladding, Signal attenuation, Photonic crystal fibers, Structured optical fibers, Silica, Terahertz radiation, Photonic crystals, Glasses, Scanning electron microscopy, Computer simulations

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Proceedings Article | 23 February 2011 Paper

Structured material combined HMO-silica fibers: preparation, optical and mechanical behavior

K. Schuster, J. Kobelke, D. Litzkendorf, A. Schwuchow, F. Lindner, J. Kirchhof, H. Bartelt, J.-L. Auguste, G. Humbert, J.-M. Blondy

Proceedings Volume 7934, 79340O (2011) https://doi.org/10.1117/12.873682

KEYWORDS: Optical fibers, Glasses, Silica, Refractive index, Cladding, Lanthanum, Ytterbium, Absorption, Signal attenuation, Supercontinuum generation

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Proceedings Article | 14 May 2010 Paper

Frequency conversion from near-infrared to mid-infrared in highly nonlinear optical fibres

Nicolas Ducros, Franck Morin, Kevin Cook, Alexis Labruyère, Sébastien Février, Georges Humbert, Fréderic Druon, Marc Hanna, Patrick Georges, J. Canning, Ryszard Buczynski, Dariusz Pysz, Ryszard Stepien

Proceedings Volume 7714, 77140B (2010) https://doi.org/10.1117/12.854379

KEYWORDS: Glasses, Chalcogenides, Raman spectroscopy, Dispersion, Fiber Bragg gratings, Mid-IR, Solitons, Nonlinear frequency conversion, Oxides, Refractive index

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Proceedings Article | 20 May 2009 Paper

Hollow-core photonic crystal fibers for integrated mid infrared sources

B. Beaudou, F. Couny, S. Février, G. Humbert, F. Gérôme, F. Benabid

Proceedings Volume 7357, 73570E (2009) https://doi.org/10.1117/12.822284

KEYWORDS: Raman spectroscopy, Photonic crystal fibers, Mid-IR, Silica, Raman scattering, Structured optical fibers, Optical fibers, Micro optical fluidics, Cladding, Photomicroscopy

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Proceedings Article | 16 May 2008 Paper

Recent developments in microstructured optical fibers and optical fiber glasses

J. Blondy, F. Gerome, J. Auguste, C. Restoin, G. Humbert, P. Roy, P. Leproux, S. Fevrier

Proceedings Volume 7004, 700404 (2008) https://doi.org/10.1117/12.791154

KEYWORDS: Optical fibers, Silica, Glasses, Photonics, Luminescence, Sensors, Cladding, Ultraviolet radiation, Sol-gels, Scanning electron microscopy

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Proceedings Article | 21 May 2007 Paper

Reduction of bend loss in large-mode-area Bragg fibres

R. Jamier, S. Février, G. Humbert, M. Devautour, P. Viale, J.-M. Blondy, S. Semjonov, M. Likhachev, M. Bubnov, E. Dianov, V. Khopin, M. Salganskii, A. Guryanov

Proceedings Volume 6588, 658805 (2007) https://doi.org/10.1117/12.723252

KEYWORDS: Waveguides, Cladding, Silica, Mirrors, Dispersion, Refractive index, Resonators, Near field, Optical fibers, Step index fibers

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Proceedings Article | 22 February 2007 Paper

Solid-core bandgap fibers

S. Février, R. Jamier, P. Viale, G. Humbert, F. Gérôme, M. Devautour, L. Lavoute, Ph. Roy, J.-M. Blondy, S. Semjonov, M. Likhachev, M. Bubnov, E. Dianov, V. Khopin, M. Salganskii, A. Guryanov

Proceedings Volume 6453, 64531A (2007) https://doi.org/10.1117/12.717325

KEYWORDS: Optical fibers, Cladding, Dispersion, Waveguides, Fiber lasers, Signal attenuation, Silica, Refractive index, Optical filters, Wave propagation

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Proceedings Article | 23 May 2006 Paper

Analysis and fabrication by electric-arc technique of high performance bandpass filters based on phase-shifted long period fiber gratings

Abdelrafik Malki, Georges Humbert

Proceedings Volume 6193, 61930P (2006) https://doi.org/10.1117/12.661252

KEYWORDS: Bandpass filters, Optical filters, Fabrication, Solids, Numerical simulations, Optical fibers, Phase shift keying, Fiber Bragg gratings, Fiber lasers, Optical design

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Proceedings Article | 15 April 2003 Paper

Two-step fabrication of single-mode fiber couplers with a CO2 laser source

Georges Humbert, Abdelrafik Malki

Proceedings Volume 4943, (2003) https://doi.org/10.1117/12.468548

KEYWORDS: Optical fibers, Carbon dioxide lasers, Single mode fibers, Multiplexers, Fabrication, Silica, Mirrors, Combustion, Contamination, Manufacturing

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Proceedings Article | 15 April 2003 Paper

Electric-arc-induced long period grating filters fabricated with dual concentric core fibers

Georges Humbert, Abdelrafik Malki, Sebastien Fevrier, Philippe Roy, Jean-Louis Auguste, Jean-Marc Blondy

Proceedings Volume 4943, (2003) https://doi.org/10.1117/12.468523

KEYWORDS: Single mode fibers, Optical filters, Mach-Zehnder interferometers, Interferometers, Cladding, Refractive index, Optical fibers, Spatial filters, Fabrication, Phase matching

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Proceedings Article | 19 October 2001 Paper

Temperature characterization of long-period fiber gratings fabricated with electric arc discharge

Georges Humbert, Abdelrafik Malki

Proceedings Volume 4579, (2001) https://doi.org/10.1117/12.444885

KEYWORDS: Annealing, Cladding, Optical fibers, Hydrogen, Temperature metrology, Fiber characterization, Optical filters, Carbon dioxide lasers, Single mode fibers, Ultraviolet radiation

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Proceedings Article | 25 September 2001 Paper

Fabrication of long period grating using electric discharge in non-hydrogenated fiber

Georges Humbert, Abdelrafik Malki, Christel Prioleau, Mohamed Ketata

Proceedings Volume 4417, (2001) https://doi.org/10.1117/12.441330

KEYWORDS: Cladding, Phase shifts, Optical filters, Linear filtering, Optical fibers, Fusion splicing, Standards development, Telecommunications, Ultraviolet radiation, Hydrogen

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Proceedings Article | 30 July 2001 Paper

Long period fiber grating filters fabrications and characterizations using electric arc in nonhydrogenated fibers

Georges Humbert, Abdelrafik Malki, Mohamed Ketata

Proceedings Volume 4532, (2001) https://doi.org/10.1117/12.436045

KEYWORDS: Stereolithography, Optical filters, Optical components, Wavelength division multiplexing, Optical communications, Single mode fibers, Fusion splicing, Annealing

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Showing 5 of 25 publications

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