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All-optical switching in a waveguide pair using unstable stationary solutions of second-harmonic generation

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1 Author(s)
Hempelmann, U. ; Theor. Elektrotech., Paderborn Univ., Germany

Coupled nonlinear waveguides are important components for all-optical signal processing. Their properties depend strongly on the existence and stability of states with no power exchange between the coupled waves (stationary solutions, nonlinear modes). In this contribution, all-optical switching based on unstable nonlinear modes of quasi-phase matched (QPM) second-harmonic generation (SHG) in a second-order nonlinear directional coupler is discussed. SHG in a waveguide pair is described by four normalized nonlinear coupling equations for the amplitudes of the single waveguide linear modes

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Lasers and Electro-Optics Society 2000 Annual Meeting. LEOS 2000. 13th Annual Meeting. IEEE  (Volume:2 )

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