This study introduces a dual-core photonic crystal fiber incorporating a highly responsive plasmonic refractive index (RI) sensor. The performance of the RI sensor is evaluated based on amplitude sensitivity, wavelength resolution, wavelength sensitivity, and the linearity of the resonance wavelength. Employing the finite element technique (FEM), a numerical analysis of the proposed design is conducted. Results indicate that employing the amplitude interrogation method yields a peak amplitude sensitivity of 605.82 RIU for y-polarization. Furthermore, the wavelength interrogation approach for y-polarized modes demonstrates a maximum wavelength sensitivity of approximately 17,000 nm/RIU and a maximum wavelength resolution of 5.88 × 10 RIU. The proposed sensor exhibits a figure of merit of approximately 298 and effectively responds to refractive index variations within the range of 1.28 to 1.40. These promising outcomes, coupled with the broad sensing range, establish the suggested sensor as a promising candidate for the detection of organic chemical solutions.

中文翻译：

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基于高灵敏度光子晶体光纤的表面等离子体共振生物传感器，用于检测各种有机溶液

本研究介绍了一种包含高响应等离子体折射率 (RI) 传感器的双芯光子晶体光纤。 RI 传感器的性能根据振幅灵敏度、波长分辨率、波长灵敏度和共振波长的线性度进行评估。采用有限元技术（FEM），对所提出的设计进行数值分析。结果表明，采用振幅询问方法可产生 605.82 RIU 的 y 偏振峰值振幅灵敏度。此外，y 偏振模式的波长询问方法显示出约 17,000 nm/RIU 的最大波长灵敏度和 5.88 × 10 RIU 的最大波长分辨率。所提出的传感器表现出约 298 的品质因数，并有效响应 1.28 至 1.40 范围内的折射率变化。这些有希望的结果，加上广泛的传感范围，使建议的传感器成为检测有机化学溶液的有前途的候选者。