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Transmission of Multiple Signals through an Optical Fiber Using Wavefront Shaping
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Energy-efficient spatial-domain-based hybrid multidimensional coded-modulations enabling multi-Tb/s optical

Ivan B Djordjevic1

  • 1University of Arizona, Department of Electrical & Computer Engineering, 1230 E. Speedway Blvd., Tucson 85721, Arizona, USA. ivan@ece.arizona.edu

Optics Express
|September 22, 2011
PubMed
Summary
This summary is machine-generated.

Future optical networks can boost capacity and energy efficiency using D-dimensional signaling. This method utilizes multiple properties of light, like orbital angular momentum (OAM), to send more data with less power.

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Quasi-light Storage for Optical Data Packets
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Published on: February 6, 2014

Area of Science:

  • Optical Communications
  • Information Theory
  • Signal Processing

Background:

  • High-speed optical transport networks face simultaneous constraints in capacity and energy consumption.
  • Existing methods struggle to address both limitations effectively.

Purpose of the Study:

  • To propose an energy-efficient hybrid D-dimensional signaling scheme for future optical networks.
  • To simultaneously improve data capacity and reduce energy usage.

Main Methods:

  • Employing all available degrees of freedom: amplitude, phase, polarization, and orbital angular momentum (OAM).
  • Utilizing orthogonal OAM eigenstates as basis functions for multidimensional signaling.
  • Designing D-dimensional signal constellations to maximize mutual information under energy constraints.

Main Results:

  • Demonstrated significant improvement in overall optical channel capacity through D-dimensional signal constellations.
  • Successfully addressed energy-efficiency by optimizing constellation design for maximum mutual information within energy limits.
  • Validated the proposed scheme's high potential via Monte Carlo simulations.

Conclusions:

  • The proposed energy-efficient hybrid D-dimensional signaling scheme offers a promising solution for overcoming capacity and energy limitations in optical networks.
  • Hybrid signaling leveraging multiple degrees of freedom, including OAM, can substantially enhance optical communication performance.