Convergence of mathematical and physical optical designs for the development of random photonic integrated circuits for an unconventional AR display concept

Kyllian Millard; Fabian Rainouard

doi:10.1117/12.2669115

16 March 2023 Convergence of mathematical and physical optical designs for the development of random photonic integrated circuits for an unconventional AR display concept

Kyllian Millard, Fabian Rainouard

Author Affiliations +

Proceedings Volume 12449, Optical Architectures for Displays and Sensing in Augmented, Virtual, and Mixed Reality (AR, VR, MR) IV; 124490S (2023) https://doi.org/10.1117/12.2669115
Event: SPIE AR | VR | MR, 2023, San Francisco, California, United States

Abstract

We present the design of a dense silicon-nitride photonic integrated circuit applied to a novel concept of unconventional augmented reality display combining holography with integrated photonic circuits embedded in the glass of the display. An integrated projector made of a grid of waveguides and electrodes generates randomly distributed emissive points at the wavelength of 532 nm, from crossings between waveguides and electrodes. These emissive points then interact with a hologram to form a composite plane wave focused on the user’s retina using the self-focusing effect. In this work, we present the design of the entire photonic circuit comprising the projector and the routing architecture to address the emissive points. We define both shapes of waveguides and electrodes by a succession of segments that we approximate by BSplines. We designed the photonic circuits using Matlab, Lumerical and KLayout softwares. We engineer the waveguide architecture on two levels in order to limit optical losses due to the high number of waveguide crossings required for the random addressing. In this contribution, we present the mathematical model used to elaborate our design as well as the technical details. We also evaluate it for our retinal projection project.

Conference Presentation

Citation Download Citation

Kyllian Millard and Fabian Rainouard "Convergence of mathematical and physical optical designs for the development of random photonic integrated circuits for an unconventional AR display concept", Proc. SPIE 12449, Optical Architectures for Displays and Sensing in Augmented, Virtual, and Mixed Reality (AR, VR, MR) IV, 124490S (16 March 2023); https://doi.org/10.1117/12.2669115

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