Speed enhancement in VCSELs employing grating mirrors

Il-Sug Chung (Invited author), Jesper Mørk (Invited author)

    Research output: Contribution to journalConference articleResearchpeer-review

    605 Downloads (Pure)


    In recent years, various approaches to improve the speed of directly modulated vertical-cavity surface-emitting lasers (VCSELs) have been reported and demonstrated good improvement. In this paper, we propose and numerically investigate a new possibility of using high-index-contrast grating (HCG) as mirror for VCSELs. By changing the grating design, one can control the reflection delay of the grating mirror, enabling the control of cavity photon lifetime. On the other hand, short energy penetration depth of the HCG results in smaller modal volume, compared to DBR VCSELs. An example structure shows that the HCG VCSEL has a 30-% higher 3-dB bandwidth than the DBR VCSEL.
    Original languageEnglish
    JournalProceedings of SPIE - The International Society for Optical Engineering
    Pages (from-to)863308
    Number of pages7
    Publication statusPublished - 2013
    EventSPIE Photonics West : High Contrast Metastructures II - The Moscone Center, San Francisco, California, United States
    Duration: 5 Feb 20137 Feb 2013


    ConferenceSPIE Photonics West : High Contrast Metastructures II
    LocationThe Moscone Center
    Country/TerritoryUnited States
    CitySan Francisco, California

    Bibliographical note

    Copyright 2013 Society of Photo-Optical Instrumentation Engineers. One print or electronic copy may be made for personal use only. Systematic reproduction and distribution, duplication of any material in this paper for a fee or for commercial purposes, or modification of the content of the paper are prohibited.


    • High speed
    • Vertical-cavity surface-emitting laser
    • HCG
    • Subwavelength


    Dive into the research topics of 'Speed enhancement in VCSELs employing grating mirrors'. Together they form a unique fingerprint.

    Cite this