RT Journal Article
T1 Towards an energy efficient 10 Gb/s optical ethernet: performance analysis and viability
A1 Larrabeiti López, David
A1 Hernández Gutiérrez, José Alberto
A1 Reviriego Vasallo, Pedro
A1 Maestro, Juan Antonio
A1 Urueña Pascual, Manuel
AB The new IEEE 802.3az Energy Efficient Ethernet (EEE) standard will improve significantly the energy efficiency of 10 Gbps copper transceivers by the introduction of a sleep mode for idle transmission times. The next step towards energy saving seems to be the applicationof similar concepts to Optical Ethernet, both for short and long range links. To this aim, this paper starts by proposing an analytical model to estimate the energy consumptionof a link that uses a sleep-mode power saving mechanism. This model can be useful toanswer a number of questions that need to be carefully studied. Otherwise, the complexityof optical components could be increased for the sake of an energy saving that could turnout negligible. In the rest of the paper we analyze three key questions to try to shedsome light on this design decision: (a) is the new copper EEE actually outperforming thecurrent regular optical Ethernet in terms of energy saving in such a way that optical PHYs(transceivers) actually need a green upgrade to remain more energy efficient than theircopper counterparts? (b) How much energy saving could be actually achieved by EE opticalEthernet? (c) What is the transition time required to achieve a substantial energy saving at medium traffic loads on EE 10 Gb/s optical Ethernet links? The answer to the latter question sets a concrete goal for short-term research in fast on–off laser technology.
PB Elsevier
SN 1573-4277
YR 2011
FD 2011-07
LK https://hdl.handle.net/10016/12810
UL https://hdl.handle.net/10016/12810
LA eng
NO This work has been supported by a Google Research Award, by the BONE project ("Building the Future Optical Network in Europe"), a Network of Excellence funded bythe European Commission through the 7th ICT-Framework Program, by the MEDIANET project and by the Spanish MCINN grants TIN2008-06739-C04-01/TSI and PR2009-0221. The authors would also like to acknowledge the support for this work from the UC3M-CAM Greencom research grant (under code CCG10-UC3M/TIC- 5624) and TEC2008-02552-E/TEC.
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RD 2 may. 2024