Abstracts
Transformation Optics and Applications
In the seminar, the speakers review the principles of optics transformation and give some examples of applications in optics and electromagnetics. The speakers present, for example, the experimental demonstration of a non magnetic cloak at microwave frequencies, an optical taper between two waveguides in both microwave and optical regimes, the practical implementation of a directive emission based on the transformation of an isotropic source at microwaves frequencies and the inverse transformation of a directive source into an isotropic one. The speakers show how judiciously engineered metamaterials allow researchers to implement practical devices, with a good impedance matching between the radiating source, the material obtained by transformation optics and the vacuum.
Metamaterial-based Antennas
Metamaterials are artificially structured media with properties not commonly found in nature. Metamaterials are actively studied at microwave frequencies where they have led to the emergence of a new class of antennas and microwave devices. In the seminar, the speakers will present high directivity antennas achieved using the Fabry-Perot cavity concept and metasurfaces. Planar and conformal antennas as well as frequency agile and beam steerable antennas will be addressed. The speakers will also talk about gradient index metamaterials for their use in low-profile 2D lens-antennas working on a wide frequency range.
About the speakers
Prof André de Lustrac
Prof Lustrac received his PhD in Electrical Engineering from the Institut d’Electronique Fondamentale (IEF), University of Paris Sud on Josephson logic devices in 1986. From 1989 to 1992, he was an Assistant Professor at the Institute of Technology of Cachan, France. He is currently a full Professor at the University of Paris 10, France and the Head of the IEF. From 2002 to 2007, he was the Director of the Systèmes Industriels et Techniques de Communication (SITEC) Department of the University of Paris 10.
Prof Lustrac has published more than 100 papers in journals and international conferences in the areas of the applications of the superconducting Josephson junctions in digital circuits, the simulation methods of high frequency III-V transistors (HEMT) and quantum circuits, and, on photonic band gap materials and metamaterials in the microwave and optical domains.
Prof Shah Nawaz Burokur
Prof Burokur received his PhD from the University of Nantes in 2005. His PhD research works dealt with the applications of split ring resonators (SRRs) to microwave devices and antennas. He is currently an Associate Professor at the University of Paris Ouest and he carries his research activities at the Institut d’Electronique Fondamentale (IEF), University of Paris Sud.
Prof Burokur’s current research interests are in the areas of microwave and applications of periodic structures, complex media, metamaterials and metasurfaces, in the analysis of integrated planar and conformal circuits and antennas. He is also involved in the design of microwaves devices based on the powerful novel concept of transformation optics.
Prof Burokur has published more than 45 papers in scientific journals and holds 1 patent on a metamaterial-based antenna. He received the Young Scientist Award from the Union Radio-Scientifique Internationale (URSI) Commission B in 2005.
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