Abstract
Planar BK7 glass waveguides were prepared by thermal ion-exchanged technique for 15-30 minutes at temperature of 585°C. Then the prepared waveguides were annealed in the air for 60 minutes at 400–600°C. It shows that the annealing process strongly influences the refractive index profiles and photoluminescence properties of the waveguides.
© 2016 Optical Society of America
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