Progress in Semiconductor Nanostructure Based Photonic Devices
- When?
- Tuesday 24 July 2012, 14:00 to 15:00
- Where?
- ATI seminar room - 02ATI02
- Open to:
- Staff, Students
- Speaker:
- Osamu Wada (Leverhulme Visiting Prof., The University of Sheffield, and Visiting Prof., Kobe University, Japan)
In order to support the ever increasing bandwidth demand in communication networks and signal processing systems, ultrafast, high-performance photonic devices are prerequisite. On the other hand, power consumption of signal switching/routing systems is considered to become a serious bottleneck in scaling up the bandwidth. The development of high-performance, power-efficient photonic devices are therefore crucial in tackling this problem. This talk first reviews the present status and issues of photonic systems and devices and then discusses recent technical developments of photonic devices based on semiconductor nanostructures, with a particular focus on ultrafast signal processing devices based on quantum dot materials which include quantum dot semiconductor optical amplifiers (SOAs) and quantum dot vertical cavity all-optical switches.
Speaker profile:
Professor Wada has more than 30 years experience in the R&D of semiconductor materials and photonic devices. He was with Fujitsu Laboratories Ltd. from 1971 to 1996, where he was engaged in devices for optical communications and interconnections. From 1996 to 2001 he headed a group of ultrafast switching devices at the Femtosecond Technology Research Association (FESTA), and he moved in 2001 to Kobe University as Professor in Department of EE Eng. Professor Wada is currently Leverhulme Visiting Prof. at The University of Sheffield and also Visiting Prof. at Kobe University and he is a Fellow of IEEE, OSA, IEICE and JSAP.
