Ring resonator structures have garnered significant attention in the field of photonics due to their versatile nature. Temperature can influence the refractive index of the materials used in the resonator, which in turn affects the resonance wavelengths and transmission properties. The purpose of this study was to examine how temperature variations impact the performance of ring resonators. By measuring the resonator response at different temperatures and analyzing the data, it is aimed to understand the thermal behavior of the ring resonators, assess their suitability for practical applications and lays the foundation for further advancements in the design and optimization of ring resonator-based systems. Within the scope of this thesis, all-pass and add-drop type ring resonators have been produced, and measurements have been carried out at 25 and 35 degrees Celsius. In addition, numerical calculations and simulations of the ring resonators have been performed and compared with experimental data.