We prepared photorefractive composites using poly(3,4-ethylenedioxythiophene)co-poly(ethyleneglycol) (PEDOT-co-PEG) as a key material doped with nonlinear optical chromophore (Coumarin 6). To adjust the optical absorbance PMMA was used as a matrix. Photorefractive properties were characterized by means of a two beam coupling (2BC) method and a degenerated four wave mixing (DFWM) method. We obtained a net 2BC gain of 146cm(-1),a diffraction efficiency of 9 %, a phase shift of 70 degrees for PMMA/PEDOT-co-PEG/Coumarin 6/composite (Sample 2). These results were dramatically larger than traditional polyvinylcarbazole (PVCz) matrix systems.