材料科学
表面等离子共振
折射率
光学
光纤传感器
光纤
表面等离子体子
极化(电化学)
波长
光子晶体光纤
芯(光纤)
渐变折射率纤维
局域表面等离子体子
保偏光纤
等离子体子
光电子学
化学
纳米技术
物理
物理化学
纳米颗粒
复合材料
作者
Ai Hosoki,Michiko Nishiyama,Kazuhiro Watanabe,Nozomu Sakurai
出处
期刊:Optics Express
[Optica Publishing Group]
日期:2022-08-17
卷期号:30 (20): 35348-35348
被引量:18
摘要
This study experimentally demonstrated the effects of two polarization-maintaining fibers (PMFs) as a sensing region instead of conventional single-mode fiber (SMF) using Au-coated hetero-core optical fiber surface plasmon resonance (SPR) sensor. We experimentally observed that the SPR resonant wavelength is shifted toward longer wavelength with refractive index (RI) increasing from 1.332 to 1.396. A PMF sensor exhibits the broad SPR spectra, resulting in a higher sensitivity with a 1.5-fold change in the light intensity at 850 nm relative to RI, compared with the SMF case. Discussions most likely responsible for this effect are given by the lower angular distribution peak in the hetero-core region of PMFs.
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