The photorefractive (PR) properties of two kinds of the double-layered PR polymeric device are presented. As one of the application utilizing the merit of large gain for the multi-layored PR device, the function as a self-pumped phase conjugation mirror (SPPCM) is discussed. Theses devices show a promise for the optical logic device, since they strongly exhibit the incident beam polarization slate dependence of the phase conjugation reflectivily.