Semiconductor physics and optoelectronic devices
As
the information passed across telecommunication networks
increases, the modulation and routing of the optical signals
travelling along the optical fibres must be carried out
at an increasing rate. Groups in our School are involved
in both the underlying fundamental physics and the development
of devices. The semiconductor group looks at the basic
physics of the way electrons and photons interact and
travel in the very thin layers used in many optoelectronic
devices. This fundamental work often uses ultrashort-pulse
lasers that have been developed in the School. Additionally,
work is in progress in the design and development of switches
for optical communications in which one light beam is
used to control the direction/route in which a signal
beam is transmitted. The diagram shows a schematic of
the concept, this can help in avoiding the speed limitations
imposed by electronics. Professor Krauss' work in microstructured
semiconductor materials may underpin a range of ultra-miniature
optical devices for use in optical communications, sensing,
and medicine.
Professor Samuel and Dr Turnbull extend the semiconductor
research from crystalline materials into semiconducting
polymers.
The School is leading a £12.5 million collaborative project researching the use of ultrafast optical sources and switches for future generations of ultra-high data rate telecommunication systems.
27.7.05
