Silica-Based Optical Fiber Modified with Gd2O3:Nd3+ Nanocrystals

We have applied the polymer-salt method of oxide nanoparticles formation for fabricating a silica-based optical fiber activated by Gd 2 O 3 :Nd3+ nanocrystals. The crystals were obtained by impregnating the cavity of a capillary with the mixture of aqueous solutions of metal salts and a soluble organic polymer. The filled capillary was thermally treated and drawn into the optical fiber exhibiting three pronounced luminescent peaks at the wavelengths of 900, 1064 and 1340 nm.