Modeling Gaussian Beam Propagation in Micro-Droplets with Ray Optics

Grating couplers serve as efficient fiber-chip interfaces. They can also be used to interface optical signals with analytes in optofluidic systems. This study investigates the intensity of a Gaussian beam, emitted from a grating coupler, when interfaced with a droplet. The results can be used to optimize the geometrical setup to maximize the interaction of the optical signal with the analyte. The presented approach can be used as a tool to simplify numerical implementations of droplets in optical simulations.