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100-nm internal gain bandwidth in Er:Yb-doped phospho-tellurite waveguides written by femtosecond laser

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Abstract

Waveguides were femtosecond laser-written in Er:Yb-doped phospho-tellurite glass yielding internal gain across an unprecedented 100-nm bandwidth covering the whole C+L communications bands. The waveguide modes were highly confined, showing promise for improved photonic integration.

© 2010 Optical Society of America

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