Abstract
A novel terahertz modulator based on graphene split-ring resonator (SRR) is proposed and designed. The device consists of a graphene SRR and two graphene surface plasmon polaritons waveguides. By changing the chemical potential of the graphene SRR, a compact terahertz wave modulator with an extraordinary modulation depth of 98.9% and low insertion loss of 0.83 dB is achieved. The results show that an electrically controlled graphene-integrated SRR terahertz modulator can be realized. The size of the proposed device is of 13 µm × 7 µm. It makes the graphene-based terahertz modulator promising as single-chip solutions for the compact terahertz system.
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This work was supported by the National Natural Science Foundation of China under Grant No. 61379024.
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Ye-xin, S., Jiu-sheng, L. & Le, Z. Graphene-integrated split-ring resonator terahertz modulator. Opt Quant Electron 49, 350 (2017). https://doi.org/10.1007/s11082-017-1198-x
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DOI: https://doi.org/10.1007/s11082-017-1198-x