A four-bias three-layer graphene-based THz absorber |
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Authors: | Barimani Samaneh Amini Amir Chaharmahali Iman |
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Affiliation: | 1.Department of Electrical Engineering, West Tehran Branch, Islamic Azad University, Tehran, Iran ;2.Department of Electrical Engineering, Andimeshk Branch, Islamic Azad University, Andimeshk, Iran ; |
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Abstract: | Wave absorbers are considered to be fundamental building blocks for the manipulation of light. Almost all optical systems exploit absorbers to realize some functions. A highly tunable wide-band THz absorber is presented herein. Utilizing a dual-bias scheme with a single graphene layer leads to greater freedom to control the absorption response, while a conventional periodic array of graphene ribbons and a layer of graphene sheet are also exploited. Also, a circuit model representation for all the constituent parts of the proposed absorber is developed with an evolved design methodology. According to the simulation results, wide-band absorption from 3.5 to 6 THz is achieved. |
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