Hollow-fiber-based surface plasmon resonance sensor with large refractive index detection range and high linearity

Duan Liangcheng; Yang Xianchao; Lu Ying; Yao Jianquan

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Hollow-fiber-based surface plasmon resonance sensor with large refractive index detection range and high linearity

机译：基于空心纤维的表面等离子体共振传感器，具有大的折射率检测范围和高线性度

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A surface plasmon resonance (SPR) sensor based on the gold-coated hollow fiber (HF) is proposed to realize the detection of refractive index (RI). The large hollow core of the HF is utilized as the microfluidic channel of the analyte, and gold is coated inside the air holes surrounding the core to generate surface plasmons. Benefitting from the unique structure of HF and liquid filling into the core, the sensor can work in a large RI range from 1.27 to 1.45 at the near-infrared region, overcoming the limitation of 1.42, as other side-hole-filled photonic crystal fiber-based SPR sensors reported. Moreover, the relations between the resonance wavelength and RI are highly linear and more suitable for standardization, while almost all similar works show higher sensitivity for the high RI change than for the low. The average spectral sensitivity 5653.57 nm/RIU is obtained. Other structure parameters, such as gold-coated air hole numbers and gold layer thicknesses, are also investigated. (c) 2017 Optical Society of America

机译：提出了一种基于镀金中空纤维（HF）的表面等离子体谐振（SPR）传感器，以实现折射率（RI）的检测。 HF的大中空核心用作分析物的微流体通道，金涂覆在围绕芯的空穴内以产生表面等离子体。受益于HF和液体填充到芯的独特结构，传感器可以在近红外区域的1.27至1.45的大型RI工作，克服1.42的限制，作为其他侧孔填充的光子晶体纤维基于SPR传感器报告。此外，谐振波长和RI之间的关系是高度线性的，并且更适合标准化，而几乎所有类似的作品对高RI变化的敏感性高于低。获得平均光谱灵敏度5653.57nm / Riu。还研究了其他结构参数，例如金涂层的空气孔数和金层厚度。（c）2017年光学学会

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来源
《Applied optics》 |2017年第36期|共6页
作者
Duan Liangcheng; Yang Xianchao; Lu Ying; Yao Jianquan;
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Tianjin Univ Coll Precis Instruments &

Optoelect Engn Inst Laser &

Optoelect Tianjin 300072 Peoples R China;

Tianjin Univ Coll Precis Instruments &

Optoelect Engn Inst Laser &

Optoelect Tianjin 300072 Peoples R China;

Tianjin Univ Coll Precis Instruments &

Optoelect Engn Inst Laser &

Optoelect Tianjin 300072 Peoples R China;

Tianjin Univ Coll Precis Instruments &

Optoelect Engn Inst Laser &

Optoelect Tianjin 300072 Peoples R China;

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正文语种 eng
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Hollow-fiber-based surface plasmon resonance sensor with large refractive index detection range and high linearity

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