Role of free carriers from two-photon absorption in Raman amplification in silicon-on-insulator waveguides

We show experimentally that free carriers generated by two-photon-absorption in silicon-on-insulator (SOI) waveguides can introduce large losses which limit the usable pump power for Raman amplification at telecommunication wavelengths. The measured pump loss agreed with a theoretical model of the f...

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Bibliographic Details
Published in:Applied physics letters 2004-04, Vol.84 (15), p.2745-2747
Main Authors: Liang, T. K., Tsang, H. K.
Format: Article
Language:English
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Summary:We show experimentally that free carriers generated by two-photon-absorption in silicon-on-insulator (SOI) waveguides can introduce large losses which limit the usable pump power for Raman amplification at telecommunication wavelengths. The measured pump loss agreed with a theoretical model of the free-carrier absorption arising from two-photon-induced free carrier generation inside the waveguide.
ISSN:0003-6951
1077-3118
DOI:10.1063/1.1702133