8 November 2013

COBRA COLLOQUIUM: Friday November 8, 2013 at 15:00 – 16:00 in the Film Theater of Grand Café and Film house De Zwarte Doos

Speaker: Prof. Dr. Harm Dorren

Title: Optics in computers, servers and data-centers

Abstract: Based on well-known laws of physics, a lower bound on the energy-per-bit required for transmitting information using a photonic channel is established. The analysis includes the energy required to convert information from the electronic to the photonic domain and back. We investigate links that employ a directly modulated laser as well as links that employ an external modulator. It is shown that the power dissipation of the channel also imposes a bound on the maximum bandwidth density for a photonic link. Keeping the above in mind, opportunities for optics in computing systems are discussed, especially from a systems perspective.

Biography: H.J.S. Dorren received his M.Sc. degree in theoretical physics in 1991 and the Ph.D. degree in 1995, both from Utrecht University, Utrecht, Netherlands. He joined Eindhoven University of Technology, Eindhoven, the Netherlands in 1996 where he presently serves as a full professor and as the scientific director of the COBRA Research Institute. Between 1996 and 1999, he was also a part-time research in KPN-Research in the Netherlands. In 2002 he was a visiting researcher at the National Institute of Industrial Science and Technology (AIST) in Tsukuba in Japan and in the summer of 2012 he serves as a visiting professor at the University of Tokyo. He won VIDI and VICI grants by the Netherlands Organization for Scientific Research in 2002 and 2006. His research interests include optical packet switching, digital and ultrafast photonics, and optical interconnects. Prof. Dorren (co-) authored over 450 journal papers and conference proceedings. He served as an associate editor for the IEEE Journal of Quantum Electronics between 2005 and 2009. In 2010, he co-chaired an IEEE winter topical meeting on Optical Interconnects. In 2012, he acted as one of the TPC chairs for the European Conference on Optical Communications and for the Conference on Photonics and Switching. In 2012 Prof. Dorren co-founded SmartPhotonics BV, a COBRA spin-out company offering III-V foundry services.

After the colloquium (around 16:00) we organize a mini-colloquium in which three COBRA researchers, one from each of the three COBRA groups, will give a short presentation about his or her work.

For the Electro Optical Communication Group:
Speaker: Hedde Bosman
Title: Anomaly Detection in Wireless Sensor Networks
For the Photonic Integration Group:
Speaker: Dima Dzibrou
Title: Polarization devices for photonic circuits
For the Photonics and Semiconductor Nanophysics Group:
Speaker: Diana Car
Title: Formation and electronic properties of InSb nanocrosses.

The audience is invited to an informal gathering following the colloquium (around 17:00) in the lounge of Grand Café and Film house De Zwarte Doos.