Abstract A D-shaped optical-fiber refractive index sensor based on surface plasmon resonance is reported. Rigorous coupled-wave analysis was used to simulate the numerical modeling. The influences of different metal grating parameters on the coupling efficiency were studied and an optimal phase match was obtained. The results show that wavelength sensitivity of the proposed optical fiber sensor is as high as 0.925 μm/RIU for refractive index values from 1.35 to 1.43 with a high linearity value of 0.997. The reported structure may promote the development of high-performance biochemical sensing devices.

中文翻译：

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使用表面等离子体共振 (SPR) 和严格耦合波分析 (RCWA) 与 D 形光纤和纳米金光栅测定折射率

摘要 报道了一种基于表面等离子体共振的D形光纤折射率传感器。严格的耦合波分析用于模拟数值建模。研究了不同金属光栅参数对耦合效率的影响，并获得了最佳相位匹配。结果表明，所提出的光纤传感器的波长灵敏度高达 0.925 μm/RIU，折射率值从 1.35 到 1.43，线性度值为 0.997。报道的结构可能会促进高性能生化传感设备的发展。