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Optimizing Waveguide Outcoupling Gratings for Uniform Multiple Channels


In the design of waveguide-based near-to-eye displays, a key issue is the configuration of the in- and outcoupling gratings. As a multi-channel imaging system, the uniformity among all output channels must be ensured. In this example, a set of outcoupling gratings are optimized in VirtualLab Fusion, so to generate uniform multiple channels. For grating modeling and diffraction efficiency calculation in the optimization, rigorous Fourier modal method is employed.

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