Abstract

Changes in the refractive index of amorphous chalcogenide A2S8 films upon ultraviolet (UV) exposure and annealing at different temperatures are investigated in detail, indicating an index contrast of the order of 102 in the A2S8 channel waveguide. An As2S8 channel waveguide is fabricated using UV well irradiation and then annealing near the glass transition temperature and shows a low propagation loss of 0.76dB/cm and good propagation characterization at the 1310nm guided mode.

© 2009 Optical Society of America

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