Abstract

Thanks to a very good velocity matching between the microwave signals and optical waves in polymeric materials and progress in the synthesis of high hyperpolarizability chromophores, electro-optic (EO) polymers offer a very attractive possibility to realize low cost photonic microwave components with a very wide bandwidth and a very low driving signal. Indeed, on one hand, the EO coefficient of EO polymers achieves up to 350 pm/V [1], which is much higher than 31 pm/V, that of the popular inorganic EO crystal Lithium Niobate (LiNbO 3 ). On the other hand, RF bandwidth of 110 GHz is demonstrated for stabile E-O polymer based optical Mach-Zehnder (MZ) modulators [2]. We study the influence of dielectric nanoparticles on the microwave and optical properties of the polymers. It consists of a fine tuning of the microwave and optical properties of the EO polymers by loading with dielectric nanoparticles, aiming at improving the bandwidth by reducing the difference between the effective refractive index and dielectric constant [3].

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