LONDON — Researchers from wafer supplier IQE plc have published a joint paper in
Electronic Letters entitled "40 Gbit/s error-free operation of an oxide-confined
850-nm vertical cavity surface emitting laser (VCSEL)."
The devices demonstrated in this project set a world record for data
transmission at the 850-nm wavelength that is the standard wavelength used for
peripherals and LAN optical interconnects.
The research was done under the auspices of the European Union funded
Vertically Integrated Systems for Information Transfer (VISIT) program. Other
members of the VISIT program are Intel (Ireland), VI Systems (Germany), Chalmers
University of Technology (Sweden), The University of Cambridge (UK), University
College Cork (Ireland), The Technical University of Berlin (Germany) and the
Russian Academy of Sciences (Russia).
In July 2008 IQE's epitaxial wafer material was used to demonstrate 25-Gbit/s
VCSEL capability as part of the initial phase of the VISIT program.
"High-speed optical interconnects such as Intel's LightPeak are designed to
operate at twenty times the speed of today’s copper technology and will be
scalable to 100-Gbit/s in the coming years," said Andrew Joel, product director
at IQE, in a statement. "In addition to the higher data speeds, optical
connectors can be used over significantly longer distances than would be
possible with copper based cables."