Premium
26‐3: Tolerancing Capabilities of Crossed Gratings Versus Linear Gratings
Author(s) -
Crai Alexandra,
Wang Kai,
de Cunsel Sébastien,
Valera Salim
Publication year - 2020
Publication title -
sid symposium digest of technical papers
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.351
H-Index - 44
eISSN - 2168-0159
pISSN - 0097-966X
DOI - 10.1002/sdtp.13883
Subject(s) - grating , optics , materials science , diffraction grating , wedge (geometry) , optoelectronics , waveguide , substrate (aquarium) , diffraction efficiency , physics , oceanography , geology
Diffractive waveguides have been recognized as a promising platform for large scale manufacturable components for augmented reality (AR) devices. WaveOptics waveguides are designed to overcome the three major challenges of AR wearables: design, cost and optical performance. In this paper, some design tolerances of diffractive waveguides are modelled focusing on two waveguide structures, a WaveOptics 2D grating and a linear grating. Their tolerance to a glass substrate wedge and grating pitch mismatch are compared, showing that the WaveOptics waveguides allow better tolerance than the waveguides with typical linear gratings.