13 November 2015
COBRA COLLOQUIUM: Friday November 13, 2015 at 15:30 – 16:30 in Film Theater De Zwarte Doos.
Speaker: Prof. Alwyn Seeds, Professor of Opto-electronics and Head of the Department
of Electronic and Electrical Engineering, University College London, UK
Title: Photonic Integration for Microwave Photonics on InP and on Si
Abstract: Complex photonic systems for coherent optical communications and microwave photonics can benefit from monolithic integration of the key photonic devices with their interconnecting waveguides. Advantages include improved stability and environmental ruggedness, reduced size and reduced cost.
The talk will describe two approaches: monolithic integration on InP substrates where the technology is evolving towards a foundry approach and the direct epitaxial growth of quantum dot devices on silicon substrates, which has the potential to enable integration with silicon electronics and offers much reduced substrate costs.
Among the results to be presented are the first monolithically integrated heterodyne optical phase lock loops; the first integration of tuneable lasers with uni-travelling carrier photodiodes; the first microwave photonic circuits fabricated using an InP foundry process and the first telecommunications wavelength quantum dot lasers monolithically integrated on silicon substrates.
Biography: Alwyn Seeds received the Ph.D. and D.Sc. degrees from the University of London. From 1980 to 1983 he was a Staff Member at Lincoln Laboratory, Massachusetts Institute of Technology, where he worked on GaAs monolithic millimetre-wave integrated circuits for use in phased-array radar. He returned to England in 1983, to take up a lectureship in telecommunications at Queen Mary College, University of London, moving to University College London in 1986, where he is now Professor of Opto-electronics and Head of the Department of Electronic and Electrical Engineering, rated in the UK Government's 2014 Research Excellence Framework as one of the top four university departments in the United Kingdom that carry out research in the field of electronic engineering. He has published over 250 papers and many patents on microwave and opto-electronic devices and their systems applications. His current research interests include microwave and THz photonics and photonic integration.
Professor Seeds has been elected a Fellow of the Royal Academy of Engineering (UK), an IEEE Fellow (USA), and has served as a Member of the Board of Governors and Vice-President for Technical Affairs of the IEEE Photonics Society (USA). He is Principal Investigator of the EPSRC Programme Grant on Coherent THz Systems, Director of the joint UCL-Cambridge EPSRC Centre for Doctoral Training in Integrated Photonic and Electronic Systems and Director of the National Dark Fibre Infrastructure Service (UK). He is a co-founder of ZinWave Inc., a manufacturer of wireless over fibre systems, which was acquired by McWane Technologies in 2014. He was awarded the 2012 Gabor Medal and Prize of the Institute of Physics for his work on microwave photonics.
After the colloquium (around 16:30) we organize a mini-colloquium in which two COBRA researchers, will give a short presentation about his or her work.
For the Physics of Nanostructures Group:
Speaker: Reinier van Mourik Title: Cellular Magnetic Devices: Using magnetostatically interacting elements for logic, memory, and communication
For the Electro-Optical Communications Group:
Speaker: John van Weerdenburg Title: 10 Mode Division Multiplexed Transmission Systems
The audience is invited to an informal gathering following the colloquium (around 17:00) in the lounge of Film Theater De Zwarte Doos.