VERMILLAC , M.

We study rare-earth-doped optical fibers under laser pumping and/or ionizing radiation conditions, and characterize the photo-and/or radio-darkening phenomena happening through processes depending on fiber composition and experimental conditions.

Rare-earth-doped oxide nanoparticles in the core of silica optical fibers are becoming well studied as they yield enhanced and tailorable spectroscopic and optical properties. In this paper, the evolution of particle morphology , induced by the drawing step, is studied. Indeed, during the fiber draw process, the glass flows and particles can...