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首页> 外文期刊>Journal of Applied Spectroscopy >A Tunable Eight-Wavelength Terahertz Modulator Based on Photonic Crystals
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A Tunable Eight-Wavelength Terahertz Modulator Based on Photonic Crystals

机译:基于光子晶体的可调谐八波长太赫兹调制器

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摘要

We propose a tunable eight-wavelength terahertz modulator based on a structure of triple triangular lattice photonic crystals by using photonic crystals in the terahertz regime. The triple triangular lattice was formed by nesting circular, square, and triangular dielectric cylinders. Three square point defects were introduced into the perfect photonic crystal to produce eight defect modes. GaAs was used as the point defects to realize tunability. We used a structure with a reflecting barrier to achieve modulation at high transmission rate. The insertion loss and extinction ratio were 0.122 and 38.54 dB, respectively. The modulation rate was 0.788 dB. The performance of the eightwavelength terahertz modulator showed great potential for use in future terahertz communication systems.
机译:我们通过在太赫兹制度中使用光子晶体来提出基于三角形格子光子晶体的结构的可调谐八波长太赫兹调节剂。 通过嵌套圆形,方形和三角介质缸形成三角形晶格。 将三个平方点缺陷引入完美的光子晶体中以产生八种缺陷模式。 GaAs被用作实现可调性的点缺陷。 我们使用了具有反射屏障的结构,以实现高传输速率的调制。 插入损耗分别为0.122和38.54dB。 调制率为0.788 dB。 八波长太赫兹调制器的性能表现出在未来的太赫兹通信系统中使用的巨大潜力。

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