In- and Outcoupling Regions for Light Guides

A major part in the design of light guides for augmented- and mixed-reality applications are the couplers, in many cases realized as grating regions on the surface of the light guide. VirtualLab Fusion provides an extremely flexible approach for region configuration. When used to define grating regions on light guides, there is yet another level of flexibility, in the form of which orders are to be traced and which method applied to model the grating. For an initial investigation of the system, or for unknown structures, a functional grating model is available. For a fully fledged simulation of the grating we offer the rigorous Fourier Modal Method (FMM/RCWA). The cherry on the cake is a lookup table concept that stores the Rayleigh matrices and uses them in subsequent runs, thus increasing simulation speed.

Go through the use cases below to learn more about these capabilities:

Flexible Region Definition

This use case walks you through the flexible region configuration in VirtualLab Fusion, which allows the user to define variously shaped regions for e.g. light-guide applications.

Specification of Diffraction Orders and Efficiencies for Grating Regions

This use case covers the user-friendly interface to select grating orders and specify their efficiencies (either idealized or calculated rigorously) for the grating regions of a light guide.

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