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Proceedings Paper

Multiwavelength detection for drift compensation in fiber optic chemical sensors
Author(s): Michael D. DeGrandpre
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Paper Abstract

This paper describes results using a nonabsorbing wavelength as an internal reference to correct for nonanalyte-related signal changes and long-term drift in an absorbance-based fiber optic sensor. A renewable-reagent sensor developed for seawater pCO2 (CO2 partial pressure) was repetitively calibrated over a 12-day period and the drift in the calibration was studied. The results indicate that although the internal reference significantly improves the long-term performance, it does not fully correct for all sources of drift over the 12-day period.

Paper Details

Date Published: 10 March 1994
PDF: 8 pages
Proc. SPIE 2068, Chemical, Biochemical, and Environmental Fiber Sensors V, (10 March 1994); doi: 10.1117/12.170669
Show Author Affiliations
Michael D. DeGrandpre, Woods Hole Oceanographic Institution (United States)

Published in SPIE Proceedings Vol. 2068:
Chemical, Biochemical, and Environmental Fiber Sensors V
Robert A. Lieberman, Editor(s)

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