Ray Decorby

Professor, Faculty of Engineering - Electrical & Computer Engineering Dept

Contact

Professor, Faculty of Engineering - Electrical & Computer Engineering Dept
Email
rdecorby@ualberta.ca
Phone
(780) 492-5585
Address
11-269 Donadeo Innovation Centre For Engineering
9211-116 St
Edmonton AB
T6G 2H5

Overview

Research

Research Interests

My research involves the design and fabrication of microphotonic devices, with a view towards integration of optical devices on silicon electronics platforms. The long term goal is the monolithic integration of complex optical functionalities (light sources, detectors, spectrometers, amplifiers etc.) with silicon CMOS, microfluidic, and MEMs circuitry. To date, the work is mainly concerned with the development of new optical materials, new microfabrication processes, and new optical devices. Key themes include light emitting materials, high index contrast waveguides, microcavities, and photonic bandgap devices.

Current Research

Current research activities are focused on integrated hollow (air core) waveguides. These waveguides have potential applications to lab on chip systems, as well as for signal distribution on chips and chip-based atomic physics studies. New approaches for the fabrication of these waveguides using standard silicon-based thin film materials are under development. Potential applications under study include:

  • Chip-scale spectrometers based on tapered hollow waveguides, and their applications within lab-on-chip systems.
  • Chip-scale optical interconnects using silicon-based hollow waveguides with good optical confinement, low bending loss, and low signal delay.

Courses

ECE 475 - Optoelectronic and Photovoltaic Devices

Basic optical properties of crystalline and amorphous semiconductor materials: energy band diagrams, optical constants. Recombination and light emission in semiconductors. Light emitting diodes: spectral characteristics, materials, and applications. Stimulated emission and laser oscillation conditions in semiconductors. Laser diodes: modal and spectral properties, steady state rate equations, materials and structures. Light absorption, optical to electrical energy conversion. Photovoltaic cells: fill factors and efficiency, temperature effects, alternative materials and structures. Prerequisite: ECE 302 or E E 340. Credit may be obtained in only one of ECE 475 or E E 475.

Winter Term 2021
ECE 770 - Advanced Topics in Photonics and Plasmas

Fall Term 2020

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