During the last decade there has been an increasing interest in nonlinear optical power limiting materials. One driving force behind the increased attention is the military application of these materials. Optical limiting means that a material, through the nonlinear absorption mechanism, show an increased absorption with increasing laser irradiance. And, as the incident optical power increases, the transmitted energy is clamped to below a certain value; the transmitted energy is constant. This means that the optical limiters can provides eyes and electro optical sensor protection from lasers, if the transmitted energy is clamped below the damage threshold of the sensor. The purpose of this project is to fabricate an optical limiter device that can be used to reduce intensity of laser irradiance with wavelength of 532 nm less than 10 milli Watts. Copper phtalocyanine is one of the substance which, due to its nonlinear absorption, causes to exhibit optical limiting behavior. Polymethyl methacrylate was selected as a suitable host polymer due to its favorable properties, including high transmission in the visible region and high optical traarency. The polymeric limiter sample was prepared by two methods, first by free radical polymerization, second by tape casting technique. In the first technique, polymerization in the presence of copper phtalocyanine leads to that the final bulk sample does not have the required optical quality. In the second technique, polymeric thin films was obtain by tape casting method and have optimal optical quality. For characterizing the nonlinear behavior of thin films such as sign and magnitude of nonlinear absorption coefficient Z-scan experiment needed. This test is fundamental experiment for studying nonlinear optical behavior of the sample. Optical limiting curves of thin films was obtain by standard optical arrangement. In the sample of 0/08 grams of the copper phtalocyanine, the optical limiting threshold of output power was less than 10 milli Watts. Changing the thickness of thin films does not lead to changing the optical limiting behavior significantly. Optical limiting behavior of the samples is strongly influenced by the concentration of the molecules of copper phtalocyanines. As a part of this project, polymeric high-pass optical filter was prepared using copper phtalocyanines and zinc tetra phenyl porphyrin. In this optical filter transmission in visible region is zero and in the wavelength of about 700 nm transmission suddenly increase dramatically.