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Upcoming Events:
Cameron Naraine and Dawson Bonneville

Cameron Naraine and Dawson Bonneville

Date & Time:
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Ivor Wynne Centre 224

Event Contact:

Dr. Chang-qing Xu

The Department of Engineering Physics is going to host 13 graduate seminars each Wednesday between 12:30 and 1:20 PM in Ivor Wynne Centre 224 from January 9th to April 3rd, 2019. The title and abstract of each seminar will be posted on this event series. The graduate students will present their research at the seminars. Research activities and fun facts about their research group will also be introduced. Refreshments will be served. Please mark your calendars for these events.


Cameron Naraine, Graduate Student in the Department of Engineering Physics at McMaster University 

Characterization of Slow Light Propagation in Subwavelength Grating Structures for Optical Amplification.


All-optical silicon-based amplifiers have proved useful in the feud for higher bandwidth and signal enhancement whilst reducing the geometric footprint and power consumption in telecommunications applications. However, due to the rapid nature of light, these devices still hold inefficiencies with regards to scattering and propagation loss. The concept of slow light serves as a viable solution to this problem by offering more control over light and its directional properties. In this report, the advantages of slow light in on-chip subwavelength-sized silicon structures is discussed, proving how readily available it is in standard silicon photonic technologies as well as its potential to be used in novel optical amplification devices.


Cameron received his B.Sc. in Honours Physics from Wilfrid Laurier University in 2018 and is now working towards a M.A.Sc. degree in Engineering Physics at McMaster University. His research interests include the study, design, simulation and optimization of silicon-based periodic waveguide structures for characterization of novel on-chip silicon photonic devices focused towards telecommunication applications. In his free time, Cameron participates in personal fitness activities and sports, such as golfing and skiing, and enjoys playing the guitar and writing music.

Dawson Bonneville, Graduate Student in the Department of Engineering Physics at McMaster University 

Making Lasers with Lasers - Prototyping for On-Chip Photonic Integrated Circuits.


This talk will outline the need for on-chip photonic integrated circuits starting with the telecommunications industry, and then the advantages provided by such a platform in biological sensing and environmental monitoring. After motivating the need for a complementary metal-oxide semiconductor (CMOS) compatible laser, rare-earth ions and waveguide technology will be introduced as a solution to this problem. Fabrication steps required for definition of basic waveguide structures and a prototyping technique known as ultraviolet laser resist-mask will be demonstrated as an exposure tool for fabricating resonators and other devices towards realization of a CMOS compatible laser.


Dawson received his B.Eng in Engineering Physics from McMaster University in 2017. His research in the group is focused on the design and fabrication of silicon-based lasers and resonators, as well as the characterization of grating structures. In the future Dawson plans on completing a PhD based on micro-photonic systems either for the telecom and/or health-care industry. In his free time, Dawson enjoys reading, playing the drums, and portaging in cottage country.