Optimized moth-eye anti-reflective structures for As₂S₃ chalcogenide optical fibers

We computationally investigate moth-eye anti-reflective nanostructures imprinted on the endfaces of As₂S₃ chalcogenide optical fibers. With a goal of maximizing the transmission through the endfaces, we investigate the effect of changing the parameters of the structure, including the height, width, period, shape, and angle-of-incidence. Using these results, we design two different moth-eye structures that can theoretically achieve almost 99.9% average transmisison through an As₂S₃ surface.