首页|Enhanced sensing of terahertz surface plasmon polaritons in graphene/J-aggregate coupler using FDTD method
Enhanced sensing of terahertz surface plasmon polaritons in graphene/J-aggregate coupler using FDTD method
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NSTL
Elsevier
? 2022 Elsevier B.V.J-aggregates nanostructure proposed for realization of plasmonic manufactories like switchable localized surface resonances (LSR) due to their optical nonlinearities' properties. J-aggregates to enhancement of light-matter interaction is applied. In this regard, we propose a novel graphene/J-aggregate plasmonics coupler with subwavelength structure at telecommunication range. Utilizing device geometries and optical properties optimized for enhanced light-matter interactions lets us to harness the propagation of TM (TE) modes without the change of configuration. Here, the coupling parameters have been numerically and investigated using the finite-difference time-domain (FDTD) method. The results show that the coupling condition can be tuned by optical properties of graphene in turn leads to a tunable plasmonics coupler. It is shown that, by considering magnetic field of 0.01 T and graphene chemical potential of mc = 0.45 eV, the TM mode, and magnetic field of 0.02 T and graphene chemical potential of mc = 0.4 eV, the TE mode can be propagated in the selected ports. With the above behavior, the proposed structure may potentially be applied in telecommunication links.
Graphene plasmonsNanostructureSurface waves
Zangeneh A.M.R.、Mozaffari M.H.、Farmani A.、Mir A.
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Department of Electrical Engineering Islamic Azad University
Department of Electrical Engineering of Lorestan University
NSTL
Elsevier
