Phase-Matching Engineering in Birefringent AlGaAs Waveguides for Difference Frequency Generation

J. C. G. de Sande, G. Leo, and G. Assanto

J. Lightwave Techn. 20, 651-660 (2002)


We investigate refractive-index engineering in form-birefringent AlGaAs-AlAs multilayer waveguides aiming at the maximization of the phase-matching bandwidth for difference frequency generation. Acting on layer thickness and sequence, we predict a threefold improvement, as compared to previously reported results.