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ZJUS-A
Journal of Zhejiang University-SCIENCE A (Applied Physics & Engineering)  2007, Vol. 8 Issue (12): 2027-2031    DOI: 10.1631/jzus.2007.A2027
Electrical & Electronic Engineering     
Studies of surface plasmon resonance sensor using bi-beam differential measurement approach
ZENG Han-rong, WANG Xiao-ping, ZHANG Xue-jiao
Department of Optical Engineering, Zhejiang University, Hangzhou 310027, China
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Abstract  In this paper, a low-cost measurement approach with bi-beam was presented, which can be used for real-time detection and online analysis of solution refractive index, based on systematical analysis and experiments of conventional detection methods on surface plasmon resonance sensor. This novel method was analyzed theoretically and based on it a sensor system set was established. The factors that affect the sensor’s sensitivity and working range were discussed. The angular adjustment setup was simplified, errors produced by movable components were avoided and the maneuverability was enhanced with this new method. The noiseproof feature and stability of the sensor system were greatly improved as well.

Key words： Kretschmann prism structure      Light intensity      Bi-beam measurement      Light differential      Surface plasmon resonance     
Received: 28 January 2007     
CLC:  O43  
  O53  
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ZENG Han-rong
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ZENG Han-rong, WANG Xiao-ping, ZHANG Xue-jiao. Studies of surface plasmon resonance sensor using bi-beam differential measurement approach. Journal of Zhejiang University-SCIENCE A (Applied Physics & Engineering), 2007, 8(12): 2027-2031.

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http://www.zjujournals.com/xueshu/zjus-a/10.1631/jzus.2007.A2027     OR     http://www.zjujournals.com/xueshu/zjus-a/Y2007/V8/I12/2027

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