期刊
OPTICS LETTERS
卷 39, 期 2, 页码 271-274出版社
OPTICAL SOC AMER
DOI: 10.1364/OL.39.000271
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资金
- Nanyang Technological University (NTU) [M58040017]
- A*STAR SERC Future Data Center Technologies Thematic Strategic Research Programme [112 172 0016]
- Ministry of Education, Singapore [MOE2011-T2-2-147, MOE2011-T3-1-005]
We propose and numerically analyze a plasmonic Bragg reflector formed in a graphene waveguide. The results show that the graphene plasmonic Bragg reflector can produce a broadband stopband that can be tuned over a wide wavelength range by a small change in the Fermi energy level of graphene. By introducing a defect into the Bragg reflector, we can achieve a Fabry-Perot-like microcavity with a quality factor of 50 for the defect resonance mode formed in the stopband. The proposed Bragg reflector could be used as a broadband ultrafast tunable integrated filter and a broadband modulator. In addition, the defect microcavity may find applications in graphene-based resonators. (C) 2013 Optical Society of America
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