Electro-optic modulation and second-harmonic generation through grating-induced resonant excitation of guided modes

Using nonlinear polymer waveguides in integrated optics requires an adaptation of the device to the very special waveguiding characteristics of polymer films. We present in this paper new devices based on diffraction gratings for electro-optic modulation and potentially high efficient second-harmonic generation that are in general well suited to the use of polymers. We optimized the devices through numerical simulation to the use of PNA-PMMA films. We obtain experimentally 40% light modulation at Delta V=51.9V (r(33)=4.3pm/V) concerning electro-optic modulation and a conversion efficiency of eta=5.83*10(-6) 1/W (gamma(33)=8pm/V) for second-harmonic generation.