Grating Order Analyzer

The analysis of the diffraction efficiencies of certain diffraction orders is the typical modeling task for optical grating structures. Due to the small feature sizes and periods regarding the used wavelength of light, the efficiencies must be calculated by rigorous approaches. The well-known FMM or RCWA is one commonly applied algorithm to solve this task and is also available in VirtualLab Fusion. The results of this fully vectorial method are the complex-valued Rayleigh coefficients, which contain all necessary field information per order, from which the corresponding efficiency can be obtained. The Grating Order Analyzer in VirtualLab Fusion helps us to generate and graphically display all this information for complex grating structures (both 1 and 2D-periodic).