Analysis of Slanted Gratings for Lightguide Coupling

Slanted gratings are commonly used for coupling light into optical lightguides due to their high efficiency in a certain diffraction order. Nowadays, they are often applied in the augmented and mixed reality applications. It will be shown how VirtualLab Fusion can be used to analyze certain slanted grating geometries from literature, with specific  parameters like slant angle, fill factor, and modulation depth. In addition, the effect of different incidence angles on the diffraction efficiency is investigated.

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