Our research paper discusses the structural and optical characterization of pure Polymer Dispersed Liquid Crystal and doped PDLC with inorganic nanoparticles like CuO, ZnO and Zn. PDLC is prepared using solvent induce phase separation method. Samples have been prepared in different weight percentage concentration with different nanoparticles and PDLC. The prepared samples are studied by Fabry Perot Spectroscopic Studies, Optical Polarized Microscope, Differential Scanning Calorimetry, and Abbe Refractometer using DSR Lamda. The Phase transition temperatures by FPSS are confirmed by OPM. The observed phase transition temperature is 63.3 degrees C. There is a change in the structural and optical properties of the PDLC on the addition of CuO, ZnO and Zn nanoparticles confirmed by OPM. Large value of temperature gradient and high birefringence play important role in display devices. It is observed that there is a change in the refractive index with change in temperature. It is also observed that as temperature increases the PDLC combines the orientational ordering properties of liquid crystals and polymer networks. Our work finds application in optical display, LCD display, different types of electro optic sensors and medical devices. A variety of devices are suitable for optical fiber telecommunication.