Finite-difference time-domain modeling of monolayer graphene devices at near-infrared wavelengths

Fatemeh Davoodi; Nosrat Granpayeh

doi:10.1117/1.JNP.11.046008

9 November 2017 Finite-difference time-domain modeling of monolayer graphene devices at near-infrared wavelengths

Fatemeh Davoodi, Nosrat Granpayeh

Author Affiliations +

Journal of Nanophotonics, Vol. 11, Issue 4, 046008 (November 2017). https://doi.org/10.1117/1.JNP.11.046008

Abstract

A finite-difference time-domain (FDTD) discretization of the dispersive conductivity of monolayer graphene has been done at the wavelength of 1.55 μm, the third telecommunication window. The FDTD discretization is used to simulate a monolayer graphene plasmonic waveguide and a graphene surface plasmon polariton add–drop filter. We utilize the auxiliary equation method to solve Maxwell’s equations in time-domain and simulate monolayer graphene-based devices without using the subcell method. The results show that the implementation of this method is surprisingly consistent with the results of the previous works and theoretical method. Our proposed method does not suffer from the deficiencies of the subcell and surface boundary condition methods. Both the interband and the intraband terms of the graphene conductivity are used to implement the graphene simulation. Our proposed method is useful for the analysis of monolayer graphene devices at near-infrared wavelengths with less computational complexity.

Citation Download Citation

Fatemeh Davoodi and Nosrat Granpayeh "Finite-difference time-domain modeling of monolayer graphene devices at near-infrared wavelengths," Journal of Nanophotonics 11(4), 046008 (9 November 2017). https://doi.org/10.1117/1.JNP.11.046008

Received: 19 June 2017; Accepted: 16 October 2017; Published: 9 November 2017

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