Journal
NANO LETTERS
Volume 13, Issue 2, Pages 515-518Publisher
AMER CHEMICAL SOC
DOI: 10.1021/nl3039212
Keywords
Graphene; photonic crystal cavity; electro-optic modulation
Categories
Funding
- Office of Basic Energy Science, Department of Energy [DE-AC02-05CH11231]
- Office of Naval Research (PECASE Award) [N00014-08-1-0561]
- ONR MURI award [N00014-09-1-1066]
- National Science Foundation
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The efficient conversion of an electrical signal to an optical signal in nanophotonics enables solid state integration of electronics and photonics. The combination of graphene with photonic crystals is promising for electro-optic modulation. In this paper, we demonstrate that by electrostatic gating a single layer of graphene on top of a photonic crystal cavity, the cavity resonance can be changed significantly. A similar to 2 nm change in the cavity resonance line width and almost 400% (6 dB) change in resonance reflectivity is observed. In addition, our analysis shows that a graphene photonic crystal device can potentially be useful for a high speed and low power absorptive and refractive modulator, while maintaining a small physical footprint.
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