Title: InGaAs QD Components for Ultrashort Pulse Generation and Switching
Speaker: Pro. Richard Penty
Time: Nov. 02.2009, 10:00AM
Venue: Room A101 At WNLO
Abstract:
This talk will describe the work on integrated quantum dot laser and amplifier components at the University of Cambridge. QD devices have many attractive properties, such as their spatially and spectrally separated dot assemblies, their inhomogenous gain, and ultrafast carrier dynamics and these make them attractive for applications such as mode-locked lasers and semiconductor optical amplifiers. This has enabled extremely high performance operation. For instance, mode-locked lasers have been demonstrated with repetition rates as high as 100s of GHz and pulse widths as low as a few 100 fs. QD SOAs have exhibited very high saturation output powers in excess of 30 dBm, noise figures <5dB and gain bandwidths >100nm.
This talk will describe work at the University of Cambridge on multi-section 1300nm InGaAs QD lasers, in particular concentrating on obtaining high power, sub-ps pulse widths. It will also describe the performance of SOA and an SOA based switch components operating at temperatures up to 70°C.
Biography:
Richard Penty is currently Professor of Photonics at the University of Cambridge. He graduated from the University of Cambridge with a first class degree in Engineering and Electrical Sciences in 1986 and a PhD for research into nonlinear optical fibre devices in 1990. Richard was then an SERC IT research fellow at Cambridge until taking up a lectureship in physics at the University of Bath in 1990. In 1996 he moved to the University of Bristol as a lecturer in electrical and electronic engineering subsequently being promoted to a readership and finally to be Professor of Photonics. In 2001 he moved to the Cambridge University Engineering Department. He was elected to a fellowship of Sidney Sussex College in 2002 and was Vice Master in 2008.
His research interests include monolithic integration of quantum well and quantum dot photonic devices, high-speed optical communications systems, optical amplifiers, high speed and high brightness semiconductor lasers and radio over fibre and LAN systems. He has served on the Programme Committees of many international conferences and is co-chair of the European Conference on Integrated Optics in 2010. He has been an author of in excess of 500 refereed journal and conference papers and is Editor-in-Chief of the IET Optoelectronics journal. He is a co-founder of Zinwave Ltd.
