In this article, a Quasi D-Shape dual core Photonic Crystal Fiber Surface Plasmon Resonance sensor is offered and numerically analyzed. The offered model is established comprising of circular air holes having an external sensing polishing layer coated with gold (Au) in order to ensure simple and straightforward design. The performance parameters are examined by means of modal analysis incorporated finite element method utilizing COMSOL multiphysics software. The sensor performance is analyzed with modifying the geometrical parameters like metal (Au) layer and pitch. It is observed; this model shows maximum amplitude sensitivity of 230 RIU−1 and wavelength sensitivity of 15,000 nm-RIU−1 incorporating amplitude interrogation method and wavelength interrogation method, respectively. The Figure of Merit is similarly considered and measured to 45 per RIU inbetween the refractive index ranging 1.42 RIU to 1.46 RIU. As a final point, a comparison has been given among the work explained in this paper with existing works.

中文翻译：

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基于金涂层的准D形双核PCF SPR传感器数值分析

在本文中，提供了一种准 D 形双芯光子晶体光纤表面等离子体共振传感器并对其进行了数值分析。所提供的模型由圆形气孔组成，该气孔具有涂有金 (Au) 的外部传感抛光层，以确保设计简单明了。性能参数通过模态分析结合有限元方法使用 COMSOL multiphysics 软件进行检查。通过修改金属 (Au) 层和间距等几何参数来分析传感器性能。它被观察到；该模型分别显示了 230 RIU-1 的最大振幅灵敏度和 15,000 nm-RIU-1 的波长灵敏度，分别结合了振幅询问方法和波长询问方法。在折射率范围为 1.42 RIU 到 1.46 RIU 之间，品质因数被类似地考虑和测量为 45/RIU。最后，将本文中解释的工作与现有工作进行了比较。