Fano-resonance-based refractive index sensor with ultra-high sensitivity

作者: Jijun Xiong , Qiulin Tan , Wendong Zhang , Sanmin Shen , Shuocheng She

DOI: 10.1016/J.RINP.2021.104327

关键词:

摘要: Abstract In this paper, we propose a Fano-resonance-based refractive index sensor with ultra-high sensitivity. The comprises metal–insulator-metal (MIM) waveguide two rectangular stubs coupled circular resonator embedded defective metal nanocube (CRMN). transmission characteristics of the structure are simulated using 2D finite element method. This analysis reveals that Fano resonance mode splitting is affected by geometry sensor. addition, modulation depth and position can be tuned adjusting width length stub on CRMN. Optimizing structural parameters results in peak sensing sensitivity 10200 nm∙RIU−1 under ultra-compact size. allows to used detection hemoglobin concentration (HC). By processing simulation data, linear relationship between three different blood groups (A, B, O) HC obtained. Based principle designed device, calculated from measuring shift wavelength. These provide critical developments for application nanoscale sensors biomedical field.

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