期刊
OPTICS COMMUNICATIONS
卷 389, 期 -, 页码 35-41出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.optcom.2016.12.019
关键词
Gratings; Subwavelength structures; Vertical cavity surface emitting lasers
类别
资金
- Alexander von Humboldt Foundation
- Chinese Academy of Sciences (CAS) Pioneer Hundred Talents Program
- National Natural Science Foundation of China [61675193, 61535013, 61321063, 61137003]
- Chinese National Key Basic Research Special Fund/CNKBRSF [2012CB933501, 2016YFA0301102, 2016YFB0401804, 2016YFB0402203]
- Strategic Priority Research Program of the Chinese Academy of Sciences [XDB24010100, XDB24010200, XDB24020100, XDB24030100]
- German Research Foundation (DFG) via the collaborative research center [787]
This study presents a comparison between high-contrast gratings (HCGs) and zero-contrast gratings (ZCGs) for high-speed vertical-cavity surface-emitting lasers (VCSELs). Both types of gratings exhibit high reflectivities beyond 99.5% due to the destructive interference at the output plane, but the HCG has a broader high reflectivity band. The HCG has a lower reflection delay time and smaller energy penetration length than the ZCG. The HCG has poorer mode selectivity for the VCSEL than the ZCG. The fabrication of the ZCG is less complex but with tight fabrication tolerances.
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