Investigation of the Recording Mechanism of Multiplex Bragg Gratings for Planar Optical Radiation Input/Output in Glass Lightguides

The recording process of multiplex Bragg diffraction gratings for lightguide displays by the method of optical copying with use of a phase mask is described. In this experiment, the lightguides are made of photothermorefractive glass. A photoresistive relief phase diffraction grating unattached to the light guide plate is used as a phase mask. A compact augmented reality display is created on the basis of studying the angular multiplexing of such Bragg gratings.