研究目的
Investigating the plasmon analogue of electromagnetic induced transparency (EIT) in a compact graphene-based waveguide coupled to two rectangular nano-cavities-like structures made out of graphene nanoribbons.
研究成果
The proposed ultra-compact graphene-based waveguide structure enables the realization of plasmon induced transparency (PIT) in a V-type like configuration, which can be dynamically tuned by shifting the Fermi energy levels of the cavities. This structure may help the design of highly integrated optical devices such as nanoscale optical filters, nano-sensors, and high-speed switches.
研究不足
The realization of EIT phenomenon in atomic systems is quite challenging due to the extreme required conditions at the experimental level. The study relies on numerical simulations, which may have discrepancies with actual experimental results.
1：Experimental Design and Method Selection:
The study involves numerical simulations using the finite element method (FEM) via Comsol Multiphysics Package to investigate the plasmon analogue of EIT in a graphene-based waveguide coupled to two rectangular nano-cavities-like structures.
2：Sample Selection and Data Sources:
The structure consists of a graphene waveguide coupled to two rectangular nanocavities-like structures made out of two identical graphene nanoribbons each, embedded in a dielectric material.
3：List of Experimental Equipment and Materials:
Graphene nanoribbons, dielectric material with electric permittivity ε =
4：25, Comsol Multiphysics Package for simulations. Experimental Procedures and Operational Workflow:
An eigen SPP-mode of the graphene waveguide is excited and launched from the left input port of the structure, and the transmission spectrum is then recorded at the output port at the right side.
5：Data Analysis Methods:
The transmission spectra are analyzed to observe the emergence of a narrow transparency window, the plasmon induced transparency (PIT), and the possibility of dynamically tuning the resonance peak frequency by shifting the Fermi energy levels of the cavities.
独家科研数据包，助您复现前沿成果，加速创新突破
获取完整内容
