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Proceedings Paper

Ratiometric oxygen sensor compatible with solid state optoelectronics
Author(s): Charles Milo
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Paper Abstract

Fiber optic oxygen sensors based on polynuclear aromatic hydrocarbons or transition-metal complexes require excitation light in the UV and blue region of the spectra (1-14,16,18,19). These types of oxygen sensors are generally intensity modulated and are therefore sensitive to perturbations such as bending of the optical fiber and photodegradation of the dye. Oxygen sensors based on emission decay time measurements (15,17,20,21), which would overcome these problems, have been developed; but these sensors require complicated electronics. The oxygen sensor described here is based on a ratiometric emission intensity measurement of two porphyrins, which minimizes the effect of environmental perturbations on the optical signals (23). The excitation and emission spectra of the dyes are in the green, orange, and red region of the spectra, which makes the sensor compatible with LED excitation and photodiode detection.

Paper Details

Date Published: 30 April 1993
PDF: 4 pages
Proc. SPIE 1796, Chemical, Biochemical, and Environmental Fiber Sensors IV, (30 April 1993); doi: 10.1117/12.143552
Show Author Affiliations
Charles Milo, Devices for Vascular Intervention, Inc. (United States)


Published in SPIE Proceedings Vol. 1796:
Chemical, Biochemical, and Environmental Fiber Sensors IV
Robert A. Lieberman, Editor(s)

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