| 基于石墨烯太赫兹调制器的研究 |
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| 引用本文： | 杨振兴,郭旭光.基于石墨烯太赫兹调制器的研究[J].光学仪器,2019,41(6):60-64. |
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| 作者姓名： | 杨振兴 郭旭光 |
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| 作者单位： | 上海理工大学 上海市现代光学系统重点实验室,上海 200093;上海理工大学 光电信息与计算机工程学院,上海 200093;上海理工大学 上海市现代光学系统重点实验室,上海 200093;上海理工大学 光电信息与计算机工程学院,上海 200093 |
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| 摘 要： | 利用石墨烯的电导率可以通过电压调节的特性,研究了一种基于单层石墨烯的太赫兹调制器。为了提高太赫兹-石墨烯相互作用强度,调制器采用一种石墨烯-金属复合结构。全波电磁数值仿真结果表明,在反射工作模式下,该器件在3.5 THz的调制深度大于90%。采用平面半导体工艺,实现了调制器原型器件,并对其反射谱进行了测试,实验数据与仿真结果相符,这为以后实现高质量的太赫兹调制器奠定了基础。
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| 关 键 词： | 太赫兹波 石墨烯 调制器 |
| 收稿时间： | 2019/3/25 0:00:00 |
Research on terahertz modulator based on graphene |
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| YANG Zhenxing and GUO Xuguang.Research on terahertz modulator based on graphene[J].Optical Instruments,2019,41(6):60-64. |
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| Authors: | YANG Zhenxing and GUO Xuguang |
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| Affiliation: | Shanghai Key Laboratory of Modern Optical System, University of Shanghai for Science and Technology, Shanghai 200093, China;School of Optical-Electrical and Computer Engineering, University of Shanghai for Science and Technology, Shanghai 200093, China and Shanghai Key Laboratory of Modern Optical System, University of Shanghai for Science and Technology, Shanghai 200093, China;School of Optical-Electrical and Computer Engineering, University of Shanghai for Science and Technology, Shanghai 200093, China |
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| Abstract: | We design a terahertz monolayer graphene-based modulator using the property of voltage-tunable optical conductivity of graphene. In order to enhance the graphene-terahertz interaction strength, a metal-graphene hybrid structure is used to construct the modulator. The full-wave electromagnetic simulations show that the modulation depth is larger than 90% at 3.5 THz in the reflection operation mode. The prototype device is fabricated with planar semiconductor fabrication processes. The reflection spectra of the device are measured. The experimental data are in good agreement with the simulation results. The method is helpful for realizing high performance terahertz modulators. |
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| Keywords: | terahertz graphene modulator |
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