Grating Optimization in VirtualLab Fusion Using optiSLang
Abstract
Optimization of a modern optical system often involves a large amount of parameters. As an example, for the optimization of gratings, not only the geometrical paramters of the grating shall be considered, but also the desired incidence directions. That leads to a challenging task with greatly increased number of parameters. For such cases, VirtualLab Fusion provides an interface to the software optiSLang from Dynardo, so that different advanced optimization algorithms can be applied.
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Use Case
Optimization of Lightguide Coupling Grating for Single Incidence Direction
We demonstrate the design workflow for optimizing a rectangular grating for one specific incidence direction to obtain maximum efficiency for a specific diffraction order.
Use Case
Analysis of Slanted Gratings for Lightguide Coupling
Different slanted grating geometries are selected from literature, with varying slant angle, fill factor, and modulation depth, and the diffraction efficiencies are calculated with the Fourier modal method (FMM).