期刊
OPTICS LETTERS
卷 40, 期 6, 页码 871-874出版社
OPTICAL SOC AMER
DOI: 10.1364/OL.40.000871
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资金
- National Research Foundation of Korea [NRF-2014-R1A2A2A01006720, NRF-2009-0094046]
We propose a high-performance, graphene-based optical modulator with a surface plasmon resonance (SPR) at 1550 nm. In the proposed device, a graphene layer is embedded in a hybrid plasmonic waveguide to enhance the light-graphene interaction. The adjustment of the permittivity of the graphene causes a significant modulation of the absorption in the SPR through a variation of the field confinement in the graphene layer, in addition to a resonant angle shift. With an optimal thickness of a metal (Ag) film and the properly chosen operation point of the Fermi level of graphene, a modulation depth of similar to 100% was achieved. As the number of graphene layers in the proposed device increases, the insertion loss decreases. With five-layer graphene, a 6% insertion loss was achieved. (C) 2015 Optical Society of America
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