New Paths in Optical Sensing
José Luís Santos
Universidade do Porto
José Luís Santos earned his licenciatura in Physics from the University of Porto, Portugal, and PhD from the same University, benefiting from a collaboration with the University of Kent at Canterbury, United Kingdom. He is currently full professor at the Physics and Astronomy Department of Faculty of Sciences of University of Porto, Portugal. He is also researcher of INESC TEC—Center of Applied Photonics. His main area of research is optical fiber sensing. He is author/co-author of 235 publications in international journals, of 7 book chapters and of 5 patents. With Professor Faramarz Farahi of University of North Carolina, USA, is editor of the book Handbook of Optical Sensors, CRC Press, 2014.
Optical sensing has for long been associated with leading-edge performance and recent developments indicate this trend will continue. Progresses both at the level of well-established optical technologies and on the uncovered of fundamental optical science with direct impact on sensing and measurement justifies such statement. This talk looks for an overview of those progresses, starting with the identification of the general benefits that result from the combination of metamaterials and optical sensing, detailing the particular but important situation where special optical fibers are involved. Then the phenomenon of slow and fast light is presented within the perspective of optical sensing. The identification of the factors that determine the ultimate resolution in classical optical sensing systems is the next targeted subject, introducing the breakthrough associated with the consideration of squeezed states of light in the context of semi-classical optical sensing systems. The final part provides a glimpse of the fascinating new world of optical sensing in the realm of quantum mechanics, where truly qualitatively novel possibilities for measurement and sensing stand for discovery.