Modulation enhancements of photonic crystal vcsels

Harshil Dave, Stewart T.M. Fryslie, Jose E Schutt-Aine, Kent D Choquette

Research output: Chapter in Book/Report/Conference proceedingConference contribution


We have designed and fabricated single mode proton-implanted photonic crystal vertical-cavity surface-emitting lasers and subsequently performed DC and small signal modulation analysis. Impedance characteristics and electrical parasitics are studied for various photonic crystal designs to understand factors which limit high speed modulation. Photonic crystal designs are found to have low differential resistance, but high parasitic capacitance. By including a diffusion capacitance term in the modulation response equation, scattering parameter fitting suggests the diffusion capacitance to be the limiting factor of intensity modulation. Extracted parameters from DC, impedance, and modulation response measurements are cross-checked to verify accuracy.

Original languageEnglish (US)
Title of host publicationVertical-Cavity Surface-Emitting Lasers XXI
EditorsKent D. Choquette, Chun Lei
ISBN (Electronic)9781510606852
StatePublished - 2017
EventVertical-Cavity Surface-Emitting Lasers XXI - San Francisco, United States
Duration: Feb 1 2017Feb 2 2017

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
ISSN (Print)0277-786X
ISSN (Electronic)1996-756X


OtherVertical-Cavity Surface-Emitting Lasers XXI
Country/TerritoryUnited States
CitySan Francisco


  • Electrical parasitics
  • High speed
  • Modulation bandwidth
  • Photonic crystal
  • Vertical-cavity surface-emitting lasers (VCSELs)

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Computer Science Applications
  • Applied Mathematics
  • Electrical and Electronic Engineering


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