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Related Concept Videos

Maximum Power Transfer01:16

Maximum Power Transfer

Numerous practical applications within engineering disciplines, such as telecommunications, necessitate optimizing power delivery to a connected load. This pursuit, however, entails inherent internal losses, which can either equal or exceed the power supplied to the load. The Thevenin equivalent circuit is helpful in finding the maximum power a linear circuit can deliver to a load. It is assumed in this context that the load resistance can be adjusted.
By substituting the entire circuit with...
Conservation of AC Power01:15

Conservation of AC Power

The principle of power preservation is applicable to both ac and dc circuits. This principle, when applied to AC power, asserts that the complex, real, and reactive powers produced by the source are equal to the total complex, real, and reactive powers absorbed by the loads. When two load impedances are connected in parallel to an ac source V, the complex power provided by the source can be calculated using the relation
Energy Stored In A Coaxial Cable01:31

Energy Stored In A Coaxial Cable

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MOSFET: Enhancement Mode01:22

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Related Experiment Video

Updated: May 15, 2026

Quasi-light Storage for Optical Data Packets
07:45

Quasi-light Storage for Optical Data Packets

Published on: February 6, 2014

ONU power saving modes in next generation optical access networks: progress, efficiency and challenges.

Abhishek Dixit1, Bart Lannoo, Didier Colle

  • 1Department of Information Technology, Ghent University, IBBT, Gent, Belgium. abhishek.dixit@intec.ugent.be

Optics Express
|December 25, 2012
PubMed
Summary

Optical network units (ONU) consume significant power in fiber-to-the-home networks. This study models ONU power consumption in next-generation architectures and analyzes energy savings from low-power modes.

Related Experiment Videos

Last Updated: May 15, 2026

Quasi-light Storage for Optical Data Packets
07:45

Quasi-light Storage for Optical Data Packets

Published on: February 6, 2014

Area of Science:

  • Telecommunications Engineering
  • Energy Efficiency in Networks
  • Optical Access Technologies

Background:

  • Optical network units (ONU) represent a substantial portion (approximately 60%) of energy consumption in current fiber-to-the-home (FTTH) networks.
  • The increasing demand for bandwidth and connected devices exacerbates the power consumption challenges in optical access networks.

Purpose of the Study:

  • To develop a comprehensive power consumption model for the optical network unit (ONU).
  • To evaluate the energy consumption of ONUs across various next-generation optical access (NGOA) network architectures.
  • To analyze the potential power savings achievable through the implementation of low-power modes in ONUs.

Main Methods:

  • Development of a detailed power consumption model specifically for ONUs.
  • Simulation and analysis of ONU power usage within different NGOA network configurations.
  • Investigation of the effectiveness of low-power operational states, including power shedding, doze, and sleep modes.

Main Results:

  • The proposed model accurately quantifies ONU power consumption across diverse NGOA scenarios.
  • Significant energy savings are achievable by strategically employing low-power modes within ONUs.
  • The impact of power-saving strategies varies depending on the specific NGOA architecture and ONU operational state.

Conclusions:

  • Optimizing ONU power consumption is critical for the sustainability of future optical access networks.
  • Implementing intelligent low-power modes in ONUs offers a viable pathway to reduce overall network energy footprint.
  • Further research into dynamic power management for ONUs is warranted to maximize energy efficiency in next-generation networks.