The increase of the information transmission capacity using wavelength division multiplexing (WDM) transmission systems requires low cost compact amplifiers for metro use. Er-doped planar waveguide amplifiers are thus envisaged.
We are currently investigating a novel erbium-doped oxide glass based on Bi₂O₃, which exhibits broadband emission and negligible concentration quenching up to 13,000 ppm of Er concentration.
In this study, we report the fabrication of channel waveguides in a Bi₂O₃-based glass. Erbium doped channel waveguides were fabricated using direct laser writing (with a UV beam at 244 nm) into a bulk Er-doped glass.
The fabrication technique and results will be presented. The mode profile, loss, change in refractive index will be reported.

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