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Sylvain Girard   Professor  Senior Scientist or Principal Investigator 
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Sylvain Girard published an article in December 2018.
Top co-authors See all
Youcef Ouerdane

174 shared publications

Laboratoire Hubert Curien, UMR-CNRS 5516, F42000 Saint-Etienne, France

Thierry Robin

73 shared publications

XBlue Photonics, Lannion, FRANCE

Luciano Mescia

65 shared publications

Department of Electrical and Information EngineeringPolytechnic University of BariVia E. Orabona 4Bari70125Italy

Aziz Boukenter

59 shared publications

Laboratoire Hubert Curien, CNRS UMR5516, Université de Lyon, Université Jean Monnet, F-42023, Saint-Etienne, France

Benoit Cadier

56 shared publications

IXBlue Photonics, Rue Paul Sabatier, Lannion, 22300, France

79
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72
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Publication Record
Distribution of Articles published per year 
(2003 - 2018)
Total number of journals
published in
 
22
 
Publications See all
Article 0 Reads 0 Citations X-ray preconditioning for enhancing refractive index contrast in femtosecond laser photoinscription of embedded waveguid... Maxime Royon, Emmanuel Marin, Sylvain Girard, Aziz Boukenter... Published: 05 December 2018
Optical Materials Express, doi: 10.1364/ome.9.000065
DOI See at publisher website ABS Show/hide abstract
We investigate femtosecond pulse laser-induced refractive index changes (∆n) in bulk fused silica (Corning 7980) subject to prior hard (40 keV) X-ray irradiation with accumulated doses up to 6 MGy. The preconditioning before photoinscription improves strongly the light transport of the laser-written embedded waveguides in a range of fluences and accumulation doses. Results show that the ultrafast laser-induced ∆n is higher in samples pre-irradiated with X-rays at similar laser photon dose. The effect lies in the kick-off generation of defects and precursors by energetic X-ray photons, enhancing a subsequent laser-induced densification process. The photoinscription efficiency increases up to a saturation point and the pre-treatment can be considered as an effective option for high contrast low loss index modifications and waveguiding structures in glasses.
Article 0 Reads 0 Citations Influence of Self‐Trapped Holes on the Responses of Fluorine‐Doped Multimode Optical Fibers Exposed to Low Fluences of P... Sylvain Girard, Philippe Paillet, Michael Trinzcek, Claude M... Published: 21 September 2018
physica status solidi (a), doi: 10.1002/pssa.201800547
DOI See at publisher website
Article 0 Reads 1 Citation Temperature-Dependent Modeling of Cladding-Pumped $\text{Er}^{3+}$ / $\text{Yb}^{3+}$ -Codoped Fiber Amplifiers for Spac... Luciano Mescia, Pietro Bia, Sylvain Girard, Ayoub Ladaci, Mi... Published: 01 September 2018
Journal of Lightwave Technology, doi: 10.1109/jlt.2018.2841799
DOI See at publisher website
Article 0 Reads 1 Citation Growth and Decay Kinetics of Radiation-Induced Attenuation in Bulk Optical Materials Sylvain Girard, Timothe Allanche, Philippe Paillet, Vincent ... Published: 01 August 2018
IEEE Transactions on Nuclear Science, doi: 10.1109/tns.2017.2778318
DOI See at publisher website
Article 0 Reads 2 Citations Recent advances in radiation-hardened fiber-based technologies for space applications Sylvain Girard, Adriana Morana, Ayoub Ladaci, Thierry Robin,... Published: 01 August 2018
Journal of Optics, doi: 10.1088/2040-8986/aad271
DOI See at publisher website ABS Show/hide abstract
In this topical review, the recent progresses about radiation-hardened fiber-based technologies are detailed focusing examples on space applications. In the first part of the review, we introduce the operational principles of the various fiber-based technologies considered for use in radiation environments: passive optical fibers for data links, diagnostics; active optical fibers for amplifiers and laser sources as well as the different classes of point and distributed fiber sensors: gyroscopes, Bragg gratings, Rayleigh, Raman or Brillouin-based distributed sensors. Second, we describe the state-of-the-art regarding our knowledge of the radiation effects on the performances of these devices, from the microscopic effects observed in the amorphous silica glass used to design the fiber core and cladding to the macroscopic responses of the fiber-based devices and systems. Third, we present the recent advances regarding the hardening (improvement of the radiation tolerance) of these technologies acting at the material, device or system levels. From this review, the potential of the fiber-based technologies for operation in radiation environments is demonstrated and the future challenges to be overcome in the next years is presented.
Article 0 Reads 1 Citation Validity of the McCumber Theory at High Temperatures in Erbium and Ytterbium-Doped Aluminosilicate Fibers Ayoub Ladaci, Sylvain Girard, Luciano Mescia, Thierry Robin,... Published: 01 August 2018
IEEE Journal of Quantum Electronics, doi: 10.1109/jqe.2018.2836674
DOI See at publisher website
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