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

Liang, T. K.; Tsang, H. K.
April 2004
Applied Physics Letters;4/12/2004, Vol. 84 Issue 15, p2745
Academic Journal
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. © 2004 American Institute of Physics.


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