130-nm tunable grating-mirror VCSEL

Il-Sug Chung, Jesper Mørk

Research output: Contribution to journalConference articleResearchpeer-review


We have reported that a combination of the high-index-contrast grating (HCG) mirror as movable mirror and the extended cavity configuration with an antireflection layer can provide a tuning wavelength range of 100 nm for tunable VCSELs. Here, we report that using the air-coupled cavity configuration instead of the extended cavity configuration can bring 130-nm tuning range around 1330-nm wavelength. The air-coupled cavity is known to reduce the quantum confinement factor in VCSELs, increasing threshold. In our air-coupled cavity HCG VCSEL case, the very short power penetration length in the HCG minimizes this reduction of the quantum confinement factor, not as significant as in the air-coupled cavity DBR VCSEL.
Original languageEnglish
Article number8995-19
JournalProceedings of SPIE, the International Society for Optical Engineering
Number of pages6
Publication statusPublished - 2014
EventSPIE Photonics West : High Contrast Metastructures III - San Francisco, California, United States
Duration: 4 Feb 20146 Feb 2014


ConferenceSPIE Photonics West : High Contrast Metastructures III
Country/TerritoryUnited States
CitySan Francisco, California


  • Silicon photonics
  • HCG
  • Subwavelength grating
  • Hybrid
  • Optical interconnects
  • Optical interconnection


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