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Proceedings Paper

Modeling of measurement sensitivity of refractive index based on surface plasmon resonance of LPFGs
Author(s): Difeng Ma; Chinhua Wang; Guiju Zhang; Minfu Zhao
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Paper Abstract

In this paper, we developed a four-layer theory that is capable of calculating LPFGs with real metallic coatings using matrix method. The resonant spectrum characteristics of LPFGs coated with various metallic films are investigated in detail. The resonant wavelength shifts of LPFGs with the change of refractive index of surrounding media over different metallic thicknesses are obtained. It is found theoretically that there exists an optimal range of metallic thickness within which the maximal measurement sensitivity for the refractive index change of surrounding media can be obtained.

Paper Details

Date Published: 24 August 2009
PDF: 7 pages
Proc. SPIE 7381, International Symposium on Photoelectronic Detection and Imaging 2009: Material and Device Technology for Sensors, 73812P (24 August 2009); doi: 10.1117/12.835038
Show Author Affiliations
Difeng Ma, Soochow Univ. (China)
Chinhua Wang, Soochow Univ. (China)
Guiju Zhang, Soochow Univ. (China)
Minfu Zhao, Soochow Univ. (China)


Published in SPIE Proceedings Vol. 7381:
International Symposium on Photoelectronic Detection and Imaging 2009: Material and Device Technology for Sensors
Xu-yuan Chen; Yue-lin Wang; Zhi-ping Zhou; Qing-kang Wang, Editor(s)

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