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| 基于石墨烯太赫兹调制器的研究 |
| Research on terahertz modulator based on graphene |
| 投稿时间:2019-03-25 |
| DOI:10.3969/j.issn.1005-5630.2019.06.010 |
| 中文关键词: 太赫兹波 石墨烯 调制器 |
| 英文关键词:terahertz graphene modulator |
| 基金项目: |
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| 摘要点击次数: 2479 |
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| 中文摘要: |
| 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。 |
| 英文摘要: |
| 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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