High-speed modulation of index-guided implant-confined vertical-cavity surface-emitting lasers

Chen Chen, Paul O. Leisher, Daniel M. Kuchta, Kent D. Choquette

Research output: Contribution to journalArticlepeer-review


An etched photonic crystal (PhC) or holey wedge structure induces index confinement into 850-nm implant-confined vertical-cavity surface-emitting lasers (VCSELs) to engineer the spatial overlap between the optical mode and laser gain for improved high-speed operation and reduced relative intensity noise. Large-signal operation of 12.5 Gb/s is achieved with a single transverse-mode PhC VCSEL and 15 Gb/s with a single transverse-mode holey VCSEL. An excessive current diffusion effect is found when the difference between the electrical and optical diameter is large (>4 μm), which limits the large-signal modulation of single-mode VCSELs. The design rules for optimal single transverse-mode high-speed PhC and holey VCSELs are extracted from a parametric study of their large-signal modulation characteristics.

Original languageEnglish (US)
Article number5068464
Pages (from-to)673-678
Number of pages6
JournalIEEE Journal on Selected Topics in Quantum Electronics
Issue number3
StatePublished - May 1 2009


  • High-speed modulation
  • Semiconductor laser
  • Vertical-cavity surface-emitting laser (VCSEL)

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics
  • Electrical and Electronic Engineering


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