It was a pleasure for OSKar to welcome Professor Lorenzo Pavesi from the University of Trento on the 27th of October. He gave a talk entitled ,,Silicon Photonics: is there light at the end of the tunnel?” at 6 p.m. at the LTI lecture hall. We heavily thank SPIE for sponsoring this event. The lecture was attended by more than 50 students, who had been really impressed about the tremendous progress which had gone on in Silicon Photonics in the last years. Now we now that there is light at the end of the tunnel. Thank you Professor Pavesi for enlightening us!
Abstract: The tremendous evolution of internet has urged the microelectronic and telecommunication industries to look for technologies to face the bandwidth, speed and power consumptions that internet requires. One technology, which is emerging as a comprehensive solution to this, is integrated photonics where complexity, reconfigurability and intelligence are thrusts. An ideal platform for such integration is provided by the same material that has permitted the success of microelectronics in the last century, i. e. silicon. Silicon photonics is a technology where photonics devices are fabricated by using standard silicon technologies. In this way it is possible to leverage on the capabilities of the silicon industry to mass manufacture cheap photonics devices. A key ingredient to achieve this goal is to exploit the high level of integration that parallel and planar processing allows. Still, integration in photonics is limited to few hundreds of different components in a single chip due to the complexity of integrated photonic circuits and to the needs of hybrid integration technologies to face all the different functionalities needed. Nowadays, all the different functions have been generated and integrated in silicon photonics by using silicon based materials or, when they are not possible, hybrid integration. An example of this is the signal source which is provided by a hybrid III-V on silicon laser in silicon photonics. In this talk I will review the state of the art and present some recent results.
Biography: Lorenzo Pavesi is Professor of Experimental Physics and head of the Department of Physics at at the University of Trento (Italy). Born the 21st of November 1961, he received his PhD in Physics in 1990 at the Ecole Polytechnique Federale of Lausanne (Switzerland). In 1990 he became Assistant Professor, an Associate Professor in 1999 and Full Professor in 2002 at the University of Trento. He leads the Nanoscience Laboratory (25 people), teaches several classes at the Science Faculty of the University of Trento. He founded the research activity in semiconductor optoelectronics at the University of Trento and started several laboratories of photonics, growth and advanced treatment of materials. He was the first president and founder of the IEEE italian chapter on Nanotechnology. He has directed more than 25 PhD students and more than 25 Master thesis students. His research activity concerned the optical properties of semiconductors. During the last years, he concentrated on Silicon based photonics where he looks for the convergence between photonics and electronics by using silicon nanostructures. He is interested in active photonics devices which can be integrated in silicon by using classical waveguides or novel waveguides such as those based on dynamical photonic crystals. His interests encompass also optical sensors or biosensors and solar cells. In silicon photonics, he is one of the worldwide recognized experts, he organized several international conferences, workshops and schools and is a frequently invited speaker. He manages several research projects, both national and international. He advises EC on photonics and is a frequently invited reviewer, monitor or referee for photonics projects by several grant agencies. He is an author or co-author of more than 280 papers, author of several reviews, editor of more than 10 books, author of 2 books and holds six patents. He is chief speciality editor of the section Optics and Photonics of Frontiers in Materials, in the editorial board of Research Letters in Physics and he was in the editorial board of Journal of Nanoscience and Nanotechnologies, in the directive council of the LENS (Florence), in the Board of Delegates of E-MRS. In 2001 he was awarded the title of Cavaliere by the Italian President for scientific merit. In 2010 and 2011 he was elected distinguished speaker of the IEEE- Photonics society. He holds an H-number of 50 according to the web of science.
A report by Philipp Brenner
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