A FIBEROPTIC CHEMICAL SENSOR-BASED ON SURFACE-PLASMON RESONANCE

被引：1066
|
作者：
JORGENSON, RC
YEE, SS
机构：
[1] Sensor Technology Research Group, Department of Electrical Engineering, University of Washington, Seattle
来源：
SENSORS AND ACTUATORS B-CHEMICAL | 1993年 / 12卷 / 03期
基金：
美国国家科学基金会;
关键词：
D O I：
10.1016/0925-4005(93)80021-3
中图分类号：
O65 [分析化学];
学科分类号：
070302 ; 081704 ;
摘要：
A fiber-optic chemical sensor is presented which utilizes surface plasmon resonance excitation. The sensing element of the fiber has been fabricated by removing a section of the fiber cladding and symmetrically depositing a thin layer of highly reflecting metal onto the fiber core. A white-light source is used to introduce a range of wavelengths into the fiber optic. Changes in the sensed parameters (eg., bulk refractive index, film thickness and film refractive index) are determined by measuring the transmitted spectral-intensity distribution. Experimental results of the sensitivity and the dynamic range in the measurement of the refractive indices of aqueous solutions are in agreement with the theoretical model of the sensor.
引用
收藏
页码：213 / 220
页数：8
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