Yb-doped yttria-alumino-silicate nano-particles based optical fibers: Fabrication and characterization

An efficient method to fabricate transparent glass ceramic fibers containing in-situ grown Yb(3+) doped oxide nano-particles based on yttria-alumino-silicate glass is presented. These large-mode area Yb(3+) doped fibers having a core diameter around 25.0 mu m were drawn by a proper control over the involved process parameters; by this, the size of nano-particles was maintained within 5-10 nm. The main spectroscopic and laser properties of the fabricated fibers along with the nano-structuration results are reported. These results reveal that the developed method offers new scopes for the contemporary Yb(3+) fiber based devices. (C) 2011 Elsevier Ltd. All rights reserved