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SUMMARY:Optical Communications for Data Centres and High Performance Compu
 ting - Philip Watts (University of Cambridge)
DTSTART:20100121T160000Z
DTEND:20100121T170000Z
UID:TALK21018@talks.cam.ac.uk
CONTACT:Eiko Yoneki
DESCRIPTION:The growth of global communications has relied on the continuo
 us increase in bandwidth and hence the reduction in the cost per transmitt
 ed bit that has been achieved in optical communications.  As internet traf
 fic is still growing at 60% (2dB) per year\, innovation is still required 
 to provide greater bandwidths for data centres and metropolitan and backbo
 ne links.  Current developments concentrate on advanced signal processing\
 , modulation formats and coding.  In parallel\, exciting new photonic tech
 nologies are promising high bandwidths directly to the computer chip with 
 greatly reduced power consumption.  \n \nIn this talk\, I will review thes
 e developments and present two examples: firstly\, the results of a collab
 oration with Intel Research\, UCL and Carnegie Mellon University aimed at 
 generating serial 100 Gb/s signals for data centre applications using orth
 ogonal frequency division multiplexing (OFDM).  Secondly\, I will describe
  how the latest developments in photonic technologies such as silicon phot
 onics\, high speed optical switches and polymer waveguides together with 3
 D integration could provide high bandwidth\, low power communications embe
 dded within the package of a computer chip.  In both cases there is a need
  for interdisciplinary research to explore the implications of these techn
 ologies in the design of large computer systems.   \n
LOCATION:FW26\, Computer Laboratory\, William Gates Builiding
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