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Search: authors:"Thang Q. Tran"

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A graphene-assisted all-pass filter for a tunable terahertz transmissive modulator with near-perfect absorption

We proposed an all-pass filter based perfect absorber scheme which also can function as a highly efficient transmissive modulator. We theoretically analyzed the proposed scheme using the temporal coupled mode theory and showed that near-perfect absorption could be achieved with practically modest deviation from the critical coupling condition. We also demonstrated the feasibility...

A proposal of a perfect graphene absorber with enhanced design and fabrication tolerance

We propose a novel device structure for the perfect absorption of a one-sided lightwavve illumination, which consists of a high-contrast grating (HCG) and an evanescently coupled slab with an absorbing medium (graphene). The operation principle and design process of the proposed structure are analyzed using the coupled mode theory (CMT), which is confirmed by the rigorous coupled...

Tunable Wide-Angle Tunneling in Graphene-Assisted Frustrated Total Internal Reflection

, Suwon, South KoreaThang Q. Tran, Hyungjun Heo & Sangin KimDepartment of Energy System Research, Ajou University, Suwon 443-749, KoreaSangjun Lee AuthorsSearch for Thang Q. Tran in:Nature Research journals