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首页> 外文期刊>Optics Letters >Broadly tunable one-way terahertz plasmonic waveguide based on nonreciprocal surface magneto plasmons
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Broadly tunable one-way terahertz plasmonic waveguide based on nonreciprocal surface magneto plasmons

机译:基于不可逆表面磁等离子体的宽可调单向太赫兹​​等离子体波导

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摘要

One-way-propagating broadly tunable terahertz plasmonic waveguide at a subwavelength scale is proposed based on a metal-dielectric-semiconductor structure. Unlike other one-way plasmonic devices that are based on interference effects of surface plasmons, the proposed one-way device is based on nonreciprocal surface magneto plasmons under an external magnetic field. Theoretical and simulation results demonstrate that the one-way-propagating frequency band can be broadly tuned by the external magnetic fields. The proposed concept can be used to realize various high performance tunable plasmonic devices such as isolators, switches and splitters for ultracompact integrated plasmonic circuits.
机译:基于金属-电介质-半导体结构,提出了一种在亚波长范围内单向传播的宽可调太赫兹等离子体激元。与基于表面等离子体激元的干扰效应的其他单向等离子体激元器件不同,所提出的单向器件基于外部磁场下的不可逆表面磁等离子体激元。理论和仿真结果表明,单向传播频带可以被外部磁场广泛地调谐。提出的概念可用于实现各种高性能的可调谐等离激元器件,例如用于超紧凑集成等离激元电路的隔离器,开关和分离器。

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