A5061458762- Glass properties and applications
- Photonic Crystal and Fiber Optics
- Luminescence Properties of Advanced Materials
- Advanced Fiber Optic Sensors
- Photonic and Optical Devices
- Thin-Film Transistor Technologies
- Advanced Fiber Laser Technologies
- Advanced Radiotherapy Techniques
- Quantum optics and atomic interactions
- Solid State Laser Technologies
- Boron Compounds in Chemistry
- Radiation Detection and Scintillator Technologies
- Silicone and Siloxane Chemistry
- Photorefractive and Nonlinear Optics
- Lanthanide and Transition Metal Complexes
- X-ray Spectroscopy and Fluorescence Analysis
Institut de Physique de Nice
2018-2022
Centre National de la Recherche Scientifique
2020-2022
Université Côte d'Azur
2020-2021
University of Palermo
2018-2021
We analyzed the simultaneous response to radiation and temperature exposure of radiation-sensitive optical fibers doped with aluminum, phosphorus and/or Germanium in framework CERTYF (Combined Effects Radiations, Temperature hYdrogen on silica-based Fibers) project, whose aim is build a predictive model based intrinsic extrinsic parameters.
We investigated the radiation-induced attenuation (RIA) at 1550 nm under X-rays in two single-mode germanosilicate optical fibers (OFs): Corning SMF-28e <sup xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">+</sup> and a homemade fiber manufactured by Université Côte d'Azur framework of CERTYF project. The RIA dependence on injected power level probing signal is studied order to analyze photobleaching phenomenon high doses [>100 kGy(SiO <sub...
The X‐ray radiation‐induced attenuation (RIA) growth kinetics are studied online in different single‐mode aluminosilicate optical fibers the near‐IR (NIR) domain to evaluate their potential terms of dosimetry. differ by Al contents, core sizes, drawing parameters, and also a preform deposition process. data show no dependence RIA on all these positive result for design point or distributed radiation detectors exploiting monitor dose. rate is unchanged dose rates changing from 0.073 6.25...
We present an original experimental approach to the investigation of radiation-induced attenuation (RIA) mechanisms in optical fiber preforms.This protocol combines thermally stimulated luminescence (TSL) measurements with characterization RIA annealing during TSL readouts.It is systematically applied compositions increasing complexity resolve specific role played by each dopant.Silicate, aluminosilicate, Yb-doped silicate, and Yb,Ce-codoped aluminosilicate preform samples are...
Online X‐ray radiation induced attenuation (RIA) has been performed in aluminosilicate optical fibers having different Al concentrations. The studied UV‐visible spectral range revealed the presence of absorption bands related to defects. Their generation is shown be not noticeably dependent on dose rate. Furthermore, content (2–4 wt%), core sizes, and manufacturing processes (SPCVD or MCVD) preforms have no significant influence RIA levels kinetics, as well drawing parameters within used for...
We investigated <italic xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">in situ</i> the temperature influence on X-ray radiation-induced attenuation (RIA) levels and kinetics of an Al-doped single-mode optical fiber (OF) in visible (vis) near-infrared (NIR) spectral domains (400 nm– <inline-formula xmlns:xlink="http://www.w3.org/1999/xlink"> <tex-math notation="LaTeX">$2~\mu \text{m}$ </tex-math></inline-formula> , from room (RT) up to 300 °C). The...
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This work describes a procedure based on set of thermally stimulated luminescence measurements coupled to an original theoretical analysis which allows estimating the distribution in energy carrier-trapped states developing bandgap silica-based optical fiber glasses under ionizing irradiation. is applied undoped, aluminum-, phosphorus- and rare-earth-doped silica samples from tailormade preforms, after irradiations two very different conditions. The extracted Densities Of Trapped States...
Germano-silicate fibers, mostly employed for telecom applications, are also implemented in radiation environments data links or sensing. In this field, the understanding of radiation-induced mechanisms leading to degradation performances silica optical fibers has an essential role. Particularly, estimation activation energies density trapped states (DOTSs) governing attenuation (RIA) is primary importance. To investigate these mechanisms, thermoluminescence (TL) a powerful technique, by...