Fibre optic refractive index microsensor based on white-light SPR excitation

被引：57

作者：

Grunwald, B ^{[1
]}

Holst, G ^{[1
]}

机构：

[1] Max Planck Inst Marine Microbiol, Microsensor Res Grp, D-28359 Bremen, Germany

来源：

SENSORS AND ACTUATORS A-PHYSICAL | 2004年 / 113卷 / 02期

关键词：

fibre optic microsensor; tapered fibre; refractive index; surface plasmon resonance;

D O I：

10.1016/j.sna.2004.02.014

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

We have developed a fibre-optic microsensor for refractive index measurements and used it with a biological application. It is targeting a refractive index range for aqueous environments between 1.30 and 1.36 and a spatial resolution of below I mm. The sensing element consists of a single-ended tapered optical fibre that is coated with a 50 nm gold layer. White light is coupled into the fibre and excites surface plasmon resonance (SPR) at the fibre tip. The reflected light is measured with a spectrometer and then converted to refractive index units (RIU). The presented sensor measures the refractive index in the range of 1.30-1.38 RIU with an accuracy of 2 x 10(-4) RIU. (C) 2004 Elsevier B.V. All rights reserved.

引用

页码：174 / 180

页数：7

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