Luís Coelho received his Ph.D. in Physics from the University of Porto, Portugal, with focus on thin-film technology applied to optical fiber sensors. His main research interests are related to the detection and monitoring of chemical entities and biological targets through the application of a wide variety of optical technologies using the effects of fluorescence, absorption and the evanescent fields combined with plasmonics. He is currently working on the development of fiber optic probes to real-time monitor pollutants and contaminants in water systems.