A Polarisation Ring Resonator and the need to Couple to Small SOI Waveguides

Date: 05 Oct 2004 - 05 Oct 2004

Venue: SIMTech, Auditorium, Tower Block, Level 3


This talk will discuss the design and implementation of a polarisation independent ring resonator in small SOI waveguides. The device is based upon rib waveguide structures as opposed to the strip waveguides used by many other authors. This is to enable polarisation control, but results in a ring with a radius of 400mm, which in turn means the free spectral width is relatively small. However, for single wavelength applications this is not problematic. Fabricated devices with polarisation peaks that align to within 1 pm are discussed. The fabrication of small waveguide based devices means that coupling from optical fibres is difficult. Hence a novel coupler will also be discussed; the dual grating assisted directional coupler. Modelling will show that the device has a theoretical coupling efficiency in excess of 90%. Preliminary experimental results are also presented, which show the potential of the approach.

About the Speaker

Graham Reed is Professor of Optoelectronics at the University of Surrey in the UK. He graduated in 1983 with a First Class Honours degree in Electronic and Electrical Engineering. Subsequently he obtained a PhD in Integrated Optics in 1987. After a brief period as leader of the Electro-Optics Systems Group at ERA Technology Ltd, he joined the University of Surrey in 1989, where he established the Silicon Photonics Group. As such this was one of the pioneering groups in silicon photonics, and has made a significant impact on the state of the art. The group is currently the leading group in the UK in this field, and Professor Reed is acknowledged as the individual who initiated research on silicon photonic circuits and devices in the UK. The aim of the silicon work has been to develop a technology that would have a variety of applications, although telecommunications remains the dominant application area. The work has been carried out with collaborators from all around the world, both from academic and industrial institutions. Professor Reed has published extensively in the international scientific literature, has contributed presentations to numerous international conferences both as a submitting and an invited speaker, and has served on a variety of international committees. Recently he has co-authored the first textbook on silicon photonics, entitled Silicon Photonics: An Introduction.

Closing date for registration : 4th October 2004 This is a non-chargeable seminar.

Please register via email with the following info : your name, company name and email address.