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The sensing characteristics of plasmonic waveguide with rectangular stub and taper

机译：矩形短锥锥等离子体波导管的传感特性

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摘要

We have analyzed and simulated a two-dimensional MIM (Metal-Insulator-Metal) waveguide based sensor which consists a rectangular stub, and a taper. This device is designed and simulated numerically by Finite difference time domain (FDTD) method. The structure used to sense a refractive index of unknown material filled in taper and stub by detecting the resonance condition. The refractive index sensitivity and temperature sensitivity are analyzed for the proposed structure. The results show the linear relationship of dip position (resonant wavelength) and the refractive index of a material which is to be sensed. It also shows linear behavior with ambient temperature. In this given structure, we achieve RI sensitivity 1240 nanometer RIU and temperature sensitivity is 0.488nanometer/°C. For 0.01 resolution of a detection device, the sensitivity resolution can reach as high as 0.80×10.
机译：我们已经分析和模拟了基于二维MIM（金属-绝缘子-金属）波导的传感器，该传感器包括一个矩形短截线和一个锥度。该设备是通过有限时域（FDTD）方法进行设计和数值模拟的。该结构用于通过检测共振条件来感测填充在锥度和短截线中的未知材料的折射率。分析了所提出结构的折射率敏感性和温度敏感性。结果显示了倾角位置（谐振波长）与要检测的材料的折射率之间的线性关系。它还显示了与环境温度的线性关系。在这种给定的结构中，我们实现了RI灵敏度为1240纳米RIU，温度灵敏度为0.488nm /°C。对于0.01分辨率的检测设备，灵敏度分辨率可高达0.80×10。

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