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Speed enhancement in VCSELs employing grating mirrors

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Authors:
  • Chung, Il-Sug ;
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    Orcid logo0000-0002-6382-2795
    Department of Photonics Engineering, Technical University of Denmark
  • Mørk, Jesper
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    Department of Photonics Engineering, Technical University of Denmark
DOI:
10.1117/12.2005362
Abstract:
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.
Type:
Conference paper
Language:
English
Published in:
Proceedings of Spie, the International Society for Optical Engineering, 2013, Vol 8633
Keywords:
High speed; Vertical-cavity surface-emitting laser; HCG; Subwavelength
Main Research Area:
Science/technology
Publication Status:
Published
Review type:
Peer Review
Conference:
SPIE Photonics West : High Contrast Metastructures II, 2013
Submission year:
2013
Scientific Level:
Scientific
ID:
242226218

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