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標題: | 表面電漿元件之模擬與應用 Simulations and Applications of Surface Plasmon Polaritons Devices |
作者: | Chia-Ti Wu 吳佳廸 |
指導教授: | 李允中(Yeun-Chung Lee) |
關鍵字: | 表面電漿子,波長解多工器,電漿波導,環狀諧振器,有限元素法, Surface plasmon polaritons,Wavelength demultiplexer,Plasmonic waveguides,Ring resonator,Finite element method, |
出版年 : | 2017 |
學位: | 博士 |
摘要: | 本文中提出了一種具備奈米環狀諧振器的「金屬-絕緣體-金屬」(Metal-insulator-metal, MIM)電漿波導的新型光學波長解多工器。將其傳輸特性採用有限元素法(Finite element method, FEM)進行數值模擬研究,並透過理論計算環狀諧振器的特徵波長。針對本文所提出的結構,研究發現環狀諧振器的兩個不同高階模式諧振透射率峰值的比率,分別係接近1310nm及1550nm兩個通訊波長比例。因此,透過改變環狀諧振器中材料折射率及其結構的相關幾何參數,即可容易調整解多工器的相關諧振波長。研究顯示,模擬結果與環狀諧振器的諧振理論結果非常吻合,亦即本文所提出的環狀結構將可在高度整合的電漿元件裝置中具有顯著性的應用發展潛力。 In this paper, we propose a novel wavelength demultiplexer based on metal-insulator-metal plasmonic waveguides with a nanoscale ring resonator. Its transmission characteristics are numerically studied using finite element method (FEM) simulations, and the eigenwavelengths of the ring resonator are theoretically calculated. For the proposed structure, we found that the ratio of the orders of resonant transmittance peaks for two different high-order modes of the ring resonator is close to the ratio of the two communication wavelengths 1310 and 1550 nm. These resonance wavelengths of the demultiplexer are effortlessly tuned by varying the refractive index of the material in the ring resonator and the geometrical parameters of the structure. The results simulated by FEM agree well with those from the resonant theory of the ring resonator. The presented structures will have significant potential applications in highly integrated plasmonic devices. |
URI: | http://tdr.lib.ntu.edu.tw/jspui/handle/123456789/20380 |
DOI: | 10.6342/NTU201704155 |
全文授權: | 未授權 |
顯示於系所單位: | 生物機電工程學系 |
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