The objective of this thesis is to characterize and model an optical microring resonator (MRR) in the silicon-insulator-silicon capacitor platform (SISCAP) composed of an hybrid silicon–polysilicon (Si–PolySi) ring waveguides, here we investigate its potential for neuromorphic computing applications, specifically using the reservoir computing (RC) approach. The first part of the work focuses on the study and analysis of the non-linear optical behavior of the Si–PolySi microring resonator: at high optical power injection, two-photon absorption (TPA) generates free carriers, which modify the refractive index through free-carrier dispersion (FCD). This leads to a power-dependent shift of the resonance wavelength and a distortion of the transmission spectrum, revealing the strong non-linear response of the ring.