ANALYSIS OF DIFFRACTION GRAPHENE GRATINGS USING THE C-METHOD AND DESIGN OF A TERAHERTZ POLARIZER | Zendy

Farzaneh Arab Juneghani | Zendy; Abolghasem Zeidaabadi-Nezhad | Zendy; Reza Safian | Zendy

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ANALYSIS OF DIFFRACTION GRAPHENE GRATINGS USING THE C-METHOD AND DESIGN OF A TERAHERTZ POLARIZER

Author(s) -

Farzaneh Arab Juneghani,

Abolghasem Zeidaabadi-Nezhad,

Reza Safian

Publication year - 2018

Publication title -

progress in electromagnetics research m

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.216

H-Index - 31

ISSN - 1937-8726

DOI - 10.2528/pierm17102901

Subject(s) - polarizer , terahertz radiation , graphene , materials science , optics , diffraction , optoelectronics , physics , nanotechnology , birefringence

We analyze relief graphene gratings by the coordinate transformation method (the Cmethod). This method is also used for analysis of multilayer gratings with graphene sheets at the interfaces. By using this method, we are able to obtain the efficiency of deep graphene gratings with fast convergence rate while previous methods are limited to very shallow graphene gratings. Moreover, a terahertz polarizer is designed by relief graphene grating. Polarization extinction ratio and transmittance of single-layer and double-layer polarizer are simulated by the C-method. Doublelayer polarizer gives extinction ratio from 22 dB to 10 dB over a frequency range of 1 GHz to 4 THz.

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