In-Situ Grown Erbium-Doped Dielectric Nanoparticles in Silica-Based   Transparent Optical Fibers
  An efficient method to fabricate transparent glass ceramic fibers containing in-situ grown Er3+-doped oxide nanoparticles is presented. Characterization of the drawn fibers exhibits low loss (0.4 dB/m) and broadened Er3+ emission spectrum. This attractive method offers new scopes for fiber amplifiers. 
Bernard Dussardier (LPMC), Wilfried Blanc (LPMC), Val\'erie Mauroy   (LPMC), Mich\`ele Ude (LPMC), Stanislaw Trzesien (LPMC)...
physics.optics