Electro-optic measurement of poled polymer-based asymmetric Fabry-Perot cavity

An easy way to determine linear electro-optic effect of poled polymer mater ials was demonstrated by polymer-based asymmetric Fabry-Perot multiple refl ection cavity. The standing-free technique of the cavity and reflective lig ht path configuration was adopted in the measurement. This method can conve rt probe beam from phase modulation to intensity modulation without the ref erence beam for electro-optic application of poled polymer. The polymer use d was a disperse red 1 doped guest/host material. The principle of the syst em was analyzed by multiple reflection and index ellipsoid methods, and the voltage sensitivity about 6 mV/root Hz of the system was obtained at 1 kHz input signal.