▎ 摘　　要

In this paper, the axial plasmonic Talbot effect is investigated with a graphene monolayer sheet with different chemical potential distribution. The Talbot distance of axial self-imaging effect is discussed by controlling the chemical potential of graphene and the frequency. The Talbot distance is in inverse proportion to the frequency, and decreases when the chemical potential of graphene increases. Moreover, the full width at half maximum (FWHM) of Talbot image is also studied by varying the frequency and the chemical potential of graphene. The result shows that the FWHM follows an upward curve with the increase of chemical potential and frequency. The proposed structure might find applications in the fields of deep sub-wavelength imaging and nano-lithography.