The optical shutter glasses were fabricated for selecting suitable nonlinear optical materials with large nonlinear refractive index, ultrafast nonlinear response, and small absorption by adding heavy metal ionization to the tellurite glasses. The optical Kerr signals were investigated using the femtosecond optical Kerr shutter technology. It was shown that the Kerr signal of the glass was symmetrical, the full width at half maximum(FWHM) of the optical gating time for both materials were measured to be about 225 fs, the third order nonlinear susceptibility is ~0.8×10-20 m2/V2, and the optical transmission achieves 70%-80%. This result indicates that glasses studied in this work are very good candidates for the development of Kerr optical shutter applications in the femto and picosecond regimes.