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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 20, Iss. 14 — Jul. 2, 2012
  • pp: 14960–14970

Energy-efficiency of optical network units with vertical-cavity surface-emitting lasers

Elaine Wong, Michael Mueller, Maluge P. I. Dias, Chien Aun Chan, and Markus C. Amann  »View Author Affiliations


Optics Express, Vol. 20, Issue 14, pp. 14960-14970 (2012)
http://dx.doi.org/10.1364/OE.20.014960


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Abstract

The energy savings of 10 Gbps vertical-cavity surface-emitting lasers (VCSELs) for use in energy-efficient optical network units (ONUs) is critically examined in this work. We experimentally characterize and analytically show that the fast settling time and low power consumption during active and power-saving modes allow the VCSEL-ONU to achieve significant energy savings over the distributed feedback laser (DFB) based ONU. The power consumption per customer using VCSEL-ONUs and DFB-ONUs, is compared through an illustrative example of 10G-EPON for Video-on-Demand delivery. Using energy consumption models and numerical analyses in sleep and doze mode operations, we present an impact study of network and protocol parameters, e.g. polling cycle time, network load, and upstream access scheme used, on the achievable energy savings of VCSEL-ONUs over DFB-ONUs. Guidance on the specific power-saving mode to maximum energy savings throughout the day, is also presented.

© 2012 OSA

OCIS Codes
(060.4250) Fiber optics and optical communications : Networks
(060.4510) Fiber optics and optical communications : Optical communications
(250.7260) Optoelectronics : Vertical cavity surface emitting lasers

ToC Category:
Fiber Optics and Optical Communications

History
Original Manuscript: May 9, 2012
Revised Manuscript: June 1, 2012
Manuscript Accepted: June 4, 2012
Published: June 19, 2012

Citation
Elaine Wong, Michael Mueller, Maluge P. I. Dias, Chien Aun Chan, and Markus C. Amann, "Energy-efficiency of optical network units with vertical-cavity surface-emitting lasers," Opt. Express 20, 14960-14970 (2012)
http://www.opticsinfobase.org/oe/abstract.cfm?URI=oe-20-14-14960


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