Surface plasmon resonance sensor using a polarization-maintaining fiber on a hetero-core optical fiber structure with gold thin film
Surface plasmon resonance sensor using a polarization-maintaining fiber on a hetero-core optical fiber structure with gold thin film
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DOI：
10.1364/oe.469165
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发表时间：
2022-09-26
期刊：
影响因子：
3.8
通讯作者：
Sakurai, Nozomu
中科院分区：
文献类型：
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作者：
Hosoki, Ai;Nishiyama, Michiko;Sakurai, Nozomu
本研究利用镀金异芯光纤表面等离子体共振（SPR）传感器，通过实验证明了使用两根保偏光纤（PMF）作为传感区域而非传统单模光纤（SMF）的效果。我们通过实验观察到，随着折射率（RI）从1.332增加到1.396，SPR共振波长向长波长方向移动。与SMF情况相比，PMF传感器呈现出更宽的SPR光谱，导致在850 nm处相对于RI的光强变化为1.5倍，灵敏度更高。对这种效应最有可能的原因讨论是基于PMF异芯区域中较低的角度分布峰值。（c）2022光学出版集团，依据光学开放获取出版协议条款
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. (c) 2022 Optica Publishing Group under the terms of the Optica Open Access Publishing Agreement