Power-dependent switching in a coherent nonlinear directional coupler in the presence of saturation

Caglioti, E.; Trillo, S.; Wabnitz, S.; Daino, B.; Stegeman, G. I.
August 1987
Applied Physics Letters;8/3/1987, Vol. 51 Issue 5, p293
Academic Journal
The fundamental limitations for all-optical switching in a nonlinear directional coupler due to the saturation of the nonlinearity have been obtained by solving analytically the nonlinear coupled-mode equations. We found that there is a minimum value required for the saturation index change to obtain efficient switching, and that the number of powers at which switching occurs at one beat length can double.


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