This Bachelor Thesis presents a numerical analysis of zero-dimensional Fabry-Pérot micro-cavities, emphasizing the impact of integrating hexagonal Boron Nitride (hBN) freeforms to manipulate electric field distributions. Through the development and application of numerical models, the study explores the effects of various hBN lens shapes and configurations within Fabry-Pérot cavities, revealing significant insights into the dependence of transverse confinement on lens curvature and the behavior introduced by multiple lenses. This research contributes to the understanding of optical micro-cavities and lays the groundwork for further exploration of arbitrary hBN shapes in optical device engineering.
