The present invention discloses novel methods for fabricating glass articles, particularly optical fiber glass preforms, which may contain alumina, yttrium, lanthanum, erbium, or other rare earth metals as dopants. The glass articles made in accordance with the present invention exhibit radially uniform dopant profiles relative to conventional dopant methods. In addition, the overall concentration of the dopant is increased relative to analogous dopant methods.

A invenção atual divulga métodos da novela para fabricar os artigos de vidro, particularmente as pré-formas de vidro da fibra ótica, que podem conter o alumina, o yttrium, o lanthanum, o erbium, ou os outros metais da terra rara como dopants. Os artigos de vidro feitos de acordo com a invenção atual exibem radial métodos convencionais relative.to do dopant dos perfis uniformes do dopant. Além, a concentração total do dopant é aumentada relativo aos métodos analogous do dopant.