期刊
IEEE PHOTONICS TECHNOLOGY LETTERS
卷 31, 期 7, 页码 561-564出版社
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/LPT.2019.2902437
关键词
Absorption enhancement; multiple waveguide theory; graphene-based waveguide
资金
- National Natural Science Foundation of China [11504139, 11504140, 11811530052]
- China Postdoctoral Science Foundation [2017M611693, 2018T110440]
- Fundamental Research Funds for the Central Universities [JUSRP21935]
We propose the monolayer graphene with a periodic stack of the dielectric materials to achieve comb-like absorption enhancement. The number of absorption peaks corresponds to the stacked period number of two dielectric materials. The simulation and theoretical results illustrate that the appearance of multiple absorption peaks is attributed to the excitation of multiple waveguide modes confirmed by using the multiple waveguide theory. The perfect absorption peaks at any desired wavelength in the visible range can be tuned by carefully optimizing the structural parameters and the stacked period number of two dielectric materials.
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