折射率
光子晶体光纤
光子晶体
材料科学
功勋
光学
灵敏度(控制系统)
光纤
光电子学
光子学
物理
电子工程
工程类
作者
Yue Feng,Jiaru Han,Tao Shen,Haodong Wu,Zhiliang Qin
出处
期刊:Journal of The Optical Society of America B-optical Physics
[The Optical Society]
日期:2024-05-15
卷期号:41 (6): 1471-1471
摘要
Bioassays are important in health assessment, disease diagnosis, treatment monitoring, disease prevention, and environmental monitoring to provide better health management and quality of life for individuals and society. A D-type photonic crystal fiber optic sensor based on Bloch surface waves is proposed for biological detection within an ultra-wide refractive index. The designed D-type fiber was side-polished and alternately deposited with one-dimensional photonic crystals (1DPCs) on the polished side, consisting of a set of TiO 2 and SiO 2 alternating media with moderate refractive index differences. The designed PCF consists of symmetric air holes and polished structures. The structural parameters of this sensor are also analyzed and discussed in order to obtain better detection performance. The designed Bloch surface wave D-type photonic crystal fiber optic sensor has a maximum refractive index sensitivity of 5400 nm/RIU and a maximum amplitude sensitivity of 513.00RIU −1 . The sensor also has a resolution of 1.85×10 −5 RIU and an excellent maximum quality factor (FOM) of 222.43RIU −1 . These results show a higher figure of merit (FOM) than conventional methods, resulting in increased sensitivity and accuracy. The proposed sensor can detect the RI of unspecified analytes between 1.20 and 1.50, allowing for the analysis of many different types of analytes, such as viruses, blood plasma, cancer cells, sugars, proteins, DNA/RNA, and many more.
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