Acta Photonica Sinica ›› 2010, Vol. 39 ›› Issue (1): 53-56.doi: 10.3788/gzxb20103901.0053

• Optical Sensors • Previous Articles     Next Articles

Research on Calculating Full Width of Half Maxium of Surface Plasmon Resonance Spectrum

WU Ying-cai1,GU Zheng-tian2   

  1. (1 College of Information, Guangdong Ocean University, Zhanjiang 524088,China)
    ( College of Science, University of Shanghai for Science and Technology, Shanghai 200093,China)
  • Received:2009-02-26 Revised:2009-06-22 Online:2010-01-25 Published:2010-01-25
  • Contact: yingcai Wu
  • About author:was born in 1964.Now,he is an associate professor of Optical and Electronic Information Engineer.His research interest focuses on optic sensing technology.


Based on the characteristics of compound permittivity of metal film and the perturbation to wave-vector of surface plasmon wave,the full wave half maxium of optical spectrum has been investigated under the surface plasmon resonance sensors in wavelength interrogation.A mathematical expression has been established to describe the relation between the FWHM and parameters of the SPR sensors.The oretical research is consistent with previous experimental results and it could be employed to be theoretical guidance in optimizing properties of SPR sensors.

Key words: Optical sensor, Surface plasmon resonance, Metal film, Optical spectrum, Full width of half maxium

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