In this paper, we report a unique multi-channel Photonic Crystal Fibre (PCF) sensor based on Surface Plasmon Resonance (SPR) structure comprising of silver and gold doped plasmonic layers for multi-analyte sensing applications. We deployed a Full Vectorial Finite Element Method (FV-FEM) to investigate the sensitivity performance of the proposed PCF sensor. The SPR sensor is fully optimised to ensure propagation features, such as confinement loss, resonance condition, resolution and sensitivity are investigated within various optimised design parameters. According to spectral sensitivity analyses, 2500 nm/RIU and 3083 nm/RIU with 4 × 10−5 RIU and 3.2 × 10−5 RIU resolutions are obtained for Channel 1 (Ch1) (x-polarized) and Channel 2 (Ch2) (y-polarized), respectively.

中文翻译：

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用于多分析物传感的基于多通道光子晶体光纤的表面等离子体共振传感器

在本文中，我们报告了一种独特的基于表面等离子体共振 (SPR) 结构的多通道光子晶体光纤 (PCF) 传感器，该结构包括用于多分析物传感应用的银和金掺杂等离子体层。我们部署了全矢量有限元方法 (FV-FEM) 来研究所提出的 PCF 传感器的灵敏度性能。SPR 传感器经过全面优化，以确保在各种优化设计参数内研究传播特性，例如限制损耗、共振条件、分辨率和灵敏度。根据光谱灵敏度分析，通道 1 (Ch1) (x 极化) 和通道 2 (Ch2) 获得 2500 nm/RIU 和 3083 nm/RIU，具有 4 × 10−5 RIU 和 3.2 × 10−5 RIU 分辨率（ y 极化），分别。