The linear electro-optic coefficients (Pockels coefficients) of two novel organic chromophores, doped in thin films of poly (methyl methacrylate)(PMMA), are determined through a simple experimental method based on a waveguide sample geometry. A DC electric field is applied onto each polymeric film inducing birefringence. This varies the polarization state of a laser beam passing through the film. Measuring these variations, ...