Abstract
This work reports the preparation of planar waveguides by Ag+ -> Na+ ion
exchange in Er3+-doped tellurite glass with a composition of
75TeO(2)-2GeO(2)-10Na(2)O-12ZnO-1Er(2)O(3) (mol%). The metric, of Tx -
T-g, indicates that the glass has good thermal stability. Measurments of
refractive index, absorption spectrum, luminescence and lifetime were
made. The glass was chemically stable during the ion exchange process.
Monomode and multimode planar waveguides in the tellurite glasses have
been prepared. We determined the depth of the guides, effective
diffusion coefficient and the activation energy. The depths of the
waveguides could be controlled by varying ion exchange temperatures and
times (250-280 degrees C, and 3-12 h were used). (c) 2006 Elsevier B.V.
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