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Proceedings Paper

High-sensitivity biosensor based on double metal-cladding waveguide
Author(s): Guang Chen; Zhuangqi Cao; Xiang Li; Qishun Shen
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Paper Abstract

A new method of detecting a minute change in refractive index of an analyte is illustrated in this article. Compared with the sensors based on surface plasmon resonance (SPR), we proposed this new structure of sensor based on the theory of guided wave resonance (GWR). In this proposed double metal-cladding waveguide structure, the sample to be probed serves as its guiding layer, and two metal films act as its cladding layer. Both theoretical simulation and experimental results have shown that the sensitivity enhancement factor of GWR over SPR is more than 1 order higher to the magnitude.

Paper Details

Date Published: 28 August 2002
PDF: 7 pages
Proc. SPIE 4904, Optical Fiber and Planar Waveguide Technology II, (28 August 2002); doi: 10.1117/12.481219
Show Author Affiliations
Guang Chen, Shanghai Jiaotong Univ. (China)
Zhuangqi Cao, Shanghai Jiaotong Univ. (China)
Xiang Li, Shanghai Jiaotong Univ. (China)
Qishun Shen, Shanghai Jiaotong Univ. (China)

Published in SPIE Proceedings Vol. 4904:
Optical Fiber and Planar Waveguide Technology II
Shuisheng Jian; Steven Shen; Katsunari Okamoto, Editor(s)

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