© 2016

Energy-Efficient VCSELs for Optical Interconnects

  • Nominated as an outstanding Ph.D. thesis by the Technical University of Berlin

  • Recognized with the SPIE Green Photonics Award in Communications in 2012 and 2014, the Chorafas Prize 2012, and the Photonics21 Student Innovation Award 2014

  • Includes the first systematic evaluation of the energy efficiency of vertical-cavity surface-emitting lasers (VCSELs)

  • Provides general rules for energy-efficient operation of VCSELs applicable to VCSELs of all wavelengths


Part of the Springer Theses book series (Springer Theses)

Table of contents

  1. Front Matter
    Pages i-xv
  2. Philip Moser
    Pages 1-12
  3. Philip Moser
    Pages 13-44
  4. Philip Moser
    Pages 51-62
  5. Philip Moser
    Pages 63-73
  6. Philip Moser
    Pages 75-85
  7. Philip Moser
    Pages 87-123
  8. Philip Moser
    Pages 125-157
  9. Philip Moser
    Pages 159-161
  10. Back Matter
    Pages 163-182

About this book


This dissertation provides the first systematic analysis of the dynamic energy efficiency of vertical-cavity surface-emitting lasers (VCSELs) for optical interconnects, a key technology to address the pressing ecological and economic issues of the exponentially growing energy consumption in data centers. Energy-efficient data communication is one of the most important fields in “Green Photonics” enabling higher bit rates at significantly reduced energy consumption per bit.

In this thesis the static and dynamic properties of GaAs-based oxide-confined VCSELs emitting at 850 nm and 980 nm are analyzed and general rules for achieving energy-efficient data transmission using VCSELs at any wavelength are derived. These rules are verified in data transmission experiments leading to record energy-efficient data transmission across a wide range of multimode optical fiber distances and at high temperatures up to 85°C.

Important trade-offs between energy efficiency, temperature stability, modulation bandwidth, low current-density operation and other VCSEL properties are revealed and discussed.


Energy-efficient VCSELs Energy-efficient data transmission GaAs-based oxide-confined VCSELs Green photonics High speed VCSELs Optical data transmission Optical interconnect Oxide-confined VCSELs Semiconductor lasers Vertical-cavity surface-emitting lasers

Authors and affiliations

  1. 1.Institut für Festkörperphysik and Zentrum für NanophotonikTechnical University BerlinBerlinGermany

Bibliographic information

Industry Sectors
Energy, Utilities & Environment