![]() ![]() Grating efficiency for each grating order The “grating order transmission” analysis group uses various grating-related commands and returns a comprehensive list of results useful for general characterization of grating: A broadband (0.85-1 \(\mu m\)) planewave is normally incident on the surface grating from the substrate, resulting in multiple diffraction orders in the transmission and the reflection regions. The diffraction grating in this example is a 2D array of half-ellipsoids on a planar surface. Understand the simulation workflow and key results The grating analysis group is also useful to obtain the fraction of power for a specific grating order. Lumerical provides a set of grating scripts as well as “grating order transmission” analysis group, making it easy to calculate common results such as number of grating orders, diffraction angles and grating efficiencies at different wavelengths. This example characterizes a diffraction grating in response to a broadband planewave at normal incidence. ![]()
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