Slab waveguides were fabricated in tellurite glasses by means of nitrogen ion implantation, using a wide range of ion doses (from 5x10(12) to 8x10(16) ions/cm(2)), in order to investigate their effects on the induced refractive index change. The results of the characterization, carried out by means of dark-line spectroscopy, show the presence of an optical barrier with a decrease of the refractive index at the end of range. Annealing post-implantation process was performed at different temperatures on higher doses (>= 10(16) ions/cm(2)) ion implanted slab waveguides and the characterization showed a decrease of the barrier effect probably due to a corresponding reduction of the defects inside the glass matrix.
Annealing effect on optical barrier in ion-implanted tellurite glass waveguides
BETTINELLI, Marco Giovanni;SPEGHINI, Adolfo;
2009-01-01
Abstract
Slab waveguides were fabricated in tellurite glasses by means of nitrogen ion implantation, using a wide range of ion doses (from 5x10(12) to 8x10(16) ions/cm(2)), in order to investigate their effects on the induced refractive index change. The results of the characterization, carried out by means of dark-line spectroscopy, show the presence of an optical barrier with a decrease of the refractive index at the end of range. Annealing post-implantation process was performed at different temperatures on higher doses (>= 10(16) ions/cm(2)) ion implanted slab waveguides and the characterization showed a decrease of the barrier effect probably due to a corresponding reduction of the defects inside the glass matrix.
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