Wave propagation model of VHOE-based AR glasses

Exit-pupil-expansion (EPE) technique promises a simple and compact architecture, it makes the AR glasses acceptable to the consumer. The volume-holographic-optical-element (VHOE) based EPE shows a lot of advantages based on multiplexing capability. Current simulation model uses ray-tracing technique to make simulate. However, it is not friendly to the wave-optics researcher. In this paper, we build-up an optical model of the VHOE based EPE lightguide based on wave propagation model. It makes the simulation easier.