Abstract

The authors report a 15-dB amplification and a pump efficiency almost 30 times larger than that reported previously at 1.06 mu m in ion-exchanged waveguides. The potassium-sodium exchanged channel guides used were fabricated by thermal diffusion in a 2% Nd/sup 3+/-doped silicate glass. Measurements of the refractive index profile, in the waveguides, absorption and fluorescence spectra, fluorescence lifetime, and optical gain are presented.< <ETX xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">&gt;</ETX>

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