We describe an absolute energy efficiency metric (measured in dBε) that can be universally applied to any ICT system, subsystem and component. It shows what energy efficiency improvements are possible for any data processing/transmission/storage system. The metric’s versatility is also displayed by applying it to biologically based and quantum-level information systems. As an exemplar, we identify ten different and independent approaches, each of which on its own could achieve at least a 50% energy efficiency saving, so as to enable a thousand-fold (i.e., 30 dB) improvement in overall energy efficiency in photonic telecommunications networking.
© 2011 OSA
Optics in the Data Center
Original Manuscript: January 31, 2011
Revised Manuscript: June 14, 2011
Manuscript Accepted: June 20, 2011
Published: July 22, 2011
Michael C. Parker and Stuart D. Walker, "Roadmapping ICT: An Absolute Energy Efficiency Metric," J. Opt. Commun. Netw. 3, A49-A58 (2011)