▎ 摘　　要

We report the magneto-optical (MO) rotation effect in a periodic graphene-sheet structure. Due to the masslessness of carriers in graphene, the magnetic response is very sensitive and the magneto-optical rotation effect is therefore significant. We predict that the Verdet constant of the periodic graphene-sheet structure is roughly 10-100 times that of rare-earth-doped magneto-optical glass in the infrared region. (C) 2012 American Institute of Physics. [http://dx.doi.org/10.1063/1.4737614]