The nuclear interferometer has been widely used to probe the evolution dynamics of heavy ion collisions at intermediate energy. It has been further demonstrated theoretically and experimentally that the nucleon-nucleon correlation function is an effective probe to the symmetry energy of nuclear matter. This report presents the system dependence of the correlation functions of the intermediate mass fragments (IMFs) measured in 36Ar+112,124 Sn at 35 MeV/u. The nuclear interferometer has been widely used to probe the evolution dynamics of heavy ion collisions at intermediate energy. It has been further founded demonstrated theoretically and experimentally that the nucleon-nucleon correlation function is an effective probe to the symmetry energy of nuclear matter. the system dependence of the correlation functions of the intermediate mass fragments (IMFs) measured in 36Ar + 112,124 Sn at 35 MeV / u.