Integrated optical polarizers have been fabricated by using titanium indiffusion in conjunction with proton exchange. The polarizer consists of Ti-diffused channel waveguide with a short discontinuity fi1led with proton-exchanged waveguide. In this paper we have discussed the measuring methods which were reported in some refernces and proposed a novel design for charactering the integrated optical polarizers. While using this setup the polarizer fabricated in our laboratory exhibited polarization extinction ration of >52.5db.