A5083082049- Asphalt Pavement Performance Evaluation
- Photonic and Optical Devices
- Advanced Fiber Optic Sensors
- Infrastructure Maintenance and Monitoring
- Advanced Fiber Laser Technologies
- Optical Network Technologies
- Semiconductor Lasers and Optical Devices
- Photonic Crystal and Fiber Optics
- Photonic Crystals and Applications
- Advanced Photonic Communication Systems
- Geotechnical Engineering and Underground Structures
- Innovative concrete reinforcement materials
- High-Velocity Impact and Material Behavior
- Structural Response to Dynamic Loads
- Plasmonic and Surface Plasmon Research
- Grouting, Rheology, and Soil Mechanics
- BIM and Construction Integration
- Wireless Power Transfer Systems
- Concrete Corrosion and Durability
- Smart Materials for Construction
- Mechanical Engineering and Vibrations Research
- Advanced Battery Technologies Research
- Polymer Nanocomposites and Properties
- graph theory and CDMA systems
- Railway Engineering and Dynamics
Université Gustave Eiffel
2019-2025
Laboratoire Traitement et Communication de l’Information
2006-2024
Télécom Paris
2009-2024
Airbus (France)
2020-2023
Centre National de la Recherche Scientifique
2003-2019
Centre des Matériaux
2009-2019
Université Paris-Saclay
2016
Université Nantes Angers Le Mans
2016
Institut Mines-Télécom
2009-2012
École nationale des ponts et chaussées
2010
Light transmission measurements and frequency-delay reflectometry maps for GaAs photonic crystal membranes are presented analyzed, showing the transition from propagation with a well-defined group velocity to regime completely dominated by disorder-induced coherent scattering. Employing self-consistent optical scattering theory, only statistical functions describe structural disorder, we obtain excellent agreement experiments using no fitting parameters. Our theory together provide clear...
Brillouin distributed optical fiber strain sensors are often limited to static events because of necessary long acquisition time due the frequency sweep technique. Dynamic monitoring is ensure integrity linear structures submitted fatigue loading or vibrations, such as subsea risers flowlines, overhead pipelines, bridges, railways, high-rise towers. In this paper, a novel dynamic domain reflectometer for single ended truly measurement based on slope-assisted method presented. The local...
Ageing of asphalt binders leads to evolution pavements mechanical performances, due changes in their rheological behaviour and the binder composition. a hardening asphalt, mainly oxidation itself. Oxidation rate is influenced by several parameters, namely outside temperature, ultraviolet (UV) radiation intrinsic characteristics mixture constituents. In order assess physical chemical aged pavements, samples centimetres thickness are usually cored from field. Binders extracted these samples....
A phase-sensitive optical low-coherence reflectometry (OLCR) technique is demonstrated to simultaneously measure the absolute chromatic dispersion values of each guided LP mode a few-mode fiber. We show that OLCR requires only short samples fiber (<1 m) and has no need for high-ratio converters reach an accurate wavelength-dependent group delay evolution every mode. As example we present first time our knowledge direct complete analysis fibers with high, low, positive, negative modal values,...
We investigate the impact of disorder on propagation photonic crystal waveguide modes using phase-sensitive optical low-coherence reflectometry.Combined with a suitable numerical processing, this technique reveals considerable amount information that we cast as time-wavelength reflectance maps. By comparing measurements different samples, easily identify inter-mode scattering and losses mediated by slow leaky modes. also characterize dispersive behaviour point defects. Our results verify...
Few-mode optical fibers (FMFs) are useful for many applications such as space-division-multiplexing (SDM), high laser power generation and transport, dispersion compensation, etc. The emergence of SDM induces considerable requirements in terms FMF characterization (chromatic dispersion, birefringence, modal content, bending losses). All LP modes an can be simultaneously characterized using phase-sensitive low-coherence interferometry. differential group delay absolute chromatic values each...
We present a new self-referenced and single-ended method to measure the Brillouin-gain coefficient in monomode optical fibers accurately with high reliability. Our comparative measurements on several different show that fiber smaller effective mode area can nevertheless have higher Brillouin threshold, thus confirming significance of acousto-optic area.
Emergence of new fibers families induces considerable requirements in terms characterization and metrology (group delay, chromatic dispersion, birefringence, bending losses, etc.). The optical low-coherence reflectometry (OLCR) technique is demonstrated as a versatile method for the most types fiber. A synthesis multiple analysis concerning different specialty including rare-earth-doped fibers, few-mode microstructured will be presented. OLCR allows measuring precisely group velocity...
Abstract In order to study the permanent deformations of bituminous mixtures, a temperature-controlled triaxial test has been set up. By means creep tests at imposed stress, influence different parameters on behaviour materials (confining pressure, deviatoric stress and temperature) investigated. A viscoelastic–viscoplastic model developed simulate shown good ability for simulating results. Keywords: mixturestriaxial testruttingcreepviscoelastic–viscoplastic modellingtime–temperature...
In the framework of a study on rutting bituminous layers, thermo-controlled triaxial tests under constant confining pressure homogeneous asphalt concrete specimen have been performed. These are cyclic sinusoidal tests, with aim to reproduce in some way loading and unloading phases due traffic roads. The influences confinement load frequency studied. Tests highlighted that notably decreases strain rate as well level reached at end test. did not allow clearly observe influence response...
This paper presents first studies carried out in the European project INCIT-EV, to design a solution for integrating wireless inductive charging system electric vehicles bituminous pavement. In project, specific tests and simulations were developed study mechanical thermal behaviour of this road. particular, laboratory wheel tracking used study, at reduced scale, coil integrated Charging also performed temperature variations produced by heat dissipation coils. Finally, finite element models...
The authors propose highly resolved optical low-coherence reflectometry for investigating low-loss photonic crystal slab waveguides. This technique allows a fast, reliable, and straightforward measurement of the group delay propagation losses both TE TM polarizations. agreement with theory is very good. These measurements reveal effects related to structural disorder. versatility deep physical insight this will play key role in study slow-light devices such as