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Proceedings Paper

Fiber-based SPR sensors with calibration function
Author(s): Z. Zhang; F. Sun; G. Xiao; Y. Wu
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Paper Abstract

This work was to introduce a reference mechanism in fiber based-SPR (surface plasmon resonance) sensors to increase their sensitivity. We fabricated two tandem SPR sections in a single optical fiber and coated one of the sections with a reference material to split a regular single resonant peak into two peaks, one in regular wavelength range for sensing and another one in longer wavelength range for referencing. By using the referencing peak to specifically detect the SPR changes caused by uncontrolled factors, such as temperature variation, non-specific bonding, we were able to subtract the contribution of these factors to the sensing peak using an established relationship, and thus increase the sensitivity of the sensing dip. With the method, we have demonstrated a fiber-based SPR humidity sensor whose sensitivity is immune to the variation of environment temperature.

Paper Details

Date Published: 29 January 2008
PDF: 4 pages
Proc. SPIE 6829, Advanced Materials and Devices for Sensing and Imaging III, 682916 (29 January 2008); doi: 10.1117/12.747269
Show Author Affiliations
Z. Zhang, National Research Council (Canada)
F. Sun, National Research Council (Canada)
G. Xiao, National Research Council (Canada)
Y. Wu, Shanghai Institute of Microsystem and Information Technology (China)

Published in SPIE Proceedings Vol. 6829:
Advanced Materials and Devices for Sensing and Imaging III
Anbo Wang; Yimo Zhang; Yukihiro Ishii, Editor(s)

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