Doping of optical fiber preforms via porous silica layer infiltration with salt solutions

A process is described for reproducible deposition of porous layers uniform along the preform axis, and the effect of the nature of the solvent on the infiltration of salt solutions into the porous layer is analyzed in relation to the fabrication of fiber preforms with controlled doping level. Data are presented on the variation of the retention volume in the porous layer with sintering temperature.Translated from Neorganicheskie Materialy, Vol. 41, No. 3, 2005, pp. 363–368.Original Russian Text Copyright © 2005 by Khopin, Umnikov, Guryanov, Bubnov, Senatorov, Dianov.This revised version was published online in April 2005 with a corrected cover date.This revised version was published online in April 2005 with a corrected cover date.