Xiao Lucan, Zhang Wen, Liu Xuecheng, Lang Xianzheng, Singh Ragini, Li Guoru, Xie Yiyan, Zhang Bingyuan, Kumar Santosh
Appl Opt. 2023 Jun 1;62(16):E37-E42. doi: 10.1364/AO.483335.
In this paper, three S-tapered fiber (STF) structures with different diameters (40, 60, and 80 µm) are fabricated using conventional single-mode fiber. First, the reproducibility of the proposed S-tapered structure is confirmed through an analysis of the diameter distribution. Considering the transmitted intensities of the three various diameter, S-tapered structures reveal that the STF with a 40 µm diameter produces more evanescent waves and is more sensitive to external refractive index variations. Therefore, the STF structure with a 40 µm diameter was evaluated for the detection of different concentration of glucose solutions, demonstrating that the structure has the potential to be utilized to develop a highly sensitive fiber sensor.
在本文中，使用传统单模光纤制作了三种不同直径（40、60和80微米）的S形锥形光纤（STF）结构。首先，通过对直径分布的分析证实了所提出的S形锥形结构的可重复性。考虑到三种不同直径的S形锥形结构的传输强度，结果表明直径为40微米的STF产生更多的倏逝波，并且对外界折射率变化更敏感。因此，对直径为40微米的STF结构进行了不同浓度葡萄糖溶液检测的评估，结果表明该结构有潜力用于开发高灵敏度光纤传感器。
