Wavelength-selective pulsed all-optical switching based on cascaded second-order nonlinearity in a periodically poled lithium-niobate waveguide

We report all-optical switching in a time and wavelength window based on cascaded sum- and difference-frequency generation in a periodically poled lithium-niobate waveguide. More than 50% switching of a 5-ps pulse is observed with a gate-pulse peak power of 6.6 W.

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