Research Profile-Dr. Louis J. Dubé


Research Summary for Dr. Louis J. Dubé


Research Group: 

Group Dynamica


Département de physique, de génie physique, et d’optique Faculté des sciences et de génie, Université Laval.


tel: 418-656 2658, fax: 418 656-2040, e-mail:  This email address is being protected from spambots. You need JavaScript enabled to view it.

Research Description:

Our research activities are presently centered around 2 main themes: I. Complex networks, and II. Cavity based nano- and micro-photonics. We will only sketch some of the content of these themes and refer to our web page for further details and publications. (

Theme I: Complex networks

We are studying the formation, growth and structure of technological (e.g. Internet), social (e.g. Facebook) and biological networks, as well as the dynamics propagating on them (e.g. epidemics in the widest sense). The co-evolution of the dynamics on the networks and that of the networks is of particular interest. The ubiquitous presence of networks in our world makes it a research activity of very strong multi-disciplinary flavour.

Theme II: Cavity-based Micro- and Nano-photonics

The propagation of light in complex media and its interaction with the media offers a “hunting ground” particularly fruitful for the development of new numerical tools capable to take into account the inherent complexity of the most interesting materials (e.g. nano-, meta-materials) for applications ranging from optical guiding to high speed communications and medical sensing. Some of our recent studies have addressed the development of efficient low-threshold, high-power, directional micro-lasers, of lab-on-chip, multiplexed, chemical/biological micro-sensors, and even more recently, of photonic crystal beam shaping optimization.

These 2 research themes depend strongly on the availability of important (super)-computer facilities. The Network theme demands for hundreds of millions of Monte-Carlo simulations of relatively short programs while the Photonics theme is oriented towards Finite Element type Methods (FEM) putting a heavy load on memory requirement.

Funding for this research is provided by the Canadian Institutes for Health Research (CIHR), the Natural Sciences and Engineering Research Council (NSERC) of Canada, and the Fonds de recherche du Québec – Nature et Technologies (FRQ-NT).