In this work, to evaluate the linear and non-linear optical properties of 04 TeO2 -(04 -x)V2O5 -xMoO3 bulk samples prepared by rapid melt quenching method, their band gap values have been used. Using band gap values, refractive index, linear and non-linear optical susceptibilities and intensity dependent refractive index have been evaluated .Based on data for the mentioned quantities, the sample owing 041 of molybdenum oxide is a good candidate in optical fibers.