Photonic integrated circuits for AR display light engines

Augmented reality (AR) is poised to transform human interactions. This project aims to explore the use of photonic integrated circuits (PICs) for the development of compact and high-performance image projectors, also called “light engines”, for AR glasses. PICs are a type of integrated circuit that uses light instead of electricity to perform various functions, such as signal processing, modulation, and detection. By using PICs, it is possible to overcome the disadvantages of today’s light engine technologies. The main objective of this project is to characterize and design components and circuits for PIC-based light engines. The project will start by characterizing already-fabricated waveguide-coupled silicon (Si) photodetectors and silicon nitride (SiN) waveguide thermo-optic switches. Based on experiments, the next generation of Si photodetectors and SiN waveguide thermo-optic switches will be designed using numerical simulation tools. In addition, photonic switching circuits using the switches and photodetectors will be designed. Then, the most promising structures will be fabricated at a commercial Si photonics foundry. The results of this project will contribute to the development of a new generation of light engines for AR, which will be more compact, efficient, and high-performance than current technologies. This will ultimately lead to a better user experience, and will pave the way for the widespread adoption of AR technology in various fields such as entertainment, education, and healthcare.

Faculty Supervisor:

Joyce Poon

Student:

Partner:

Ascenta Technologies Inc.

Discipline:

Engineering

Sector:

Manufacturing

University:

University of Toronto

Program: