A Novel GO Analysis Tool for GRIN Lenses based on the Fast Sweeping Method

Additive manufacturing has facilitated the straightforward development and prototyping of Graded Index (GRIN) lenses. These lenses are constructed using inhomogeneous dielectric materials and leverage a refractive index gradient to manipulate the path of light within the lens. This technology allows for creating lenses with flat surfaces and a high level of design flexibility. The Fast Sweeping Method (FSM) is a numerical approach designed to efficiently address both wavefront propagation and field amplitude in GRIN lenses. The utility of the FSM is evaluated by establishing its accuracy and effectiveness, making it a viable alternative to traditional ray-tracing methods. Due to its robust performance, FSM emerges as a strong candidate for serving as the analytical engine in an optimization process for the automatic design of GRIN lenses.