▎ 摘　　要

In this work, we investigated the features of the propagation of surface plasmon-polariton modes with a frequencies omega = (10(14) ..10(15))rad/s with a symmetric and antisymmetric distribution of the electric field in the planar structure of a "graphene-thin dielectric film-graphene". They are received the dispersion characteristics for these types of modes. Also we found a spectral range, where the dispersion waves, phase and group velocity surface waves are most sensitive to change of a chemical potential of a graphene layers.