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Proceedings Paper

Luminescent fiber optic sensor for the measurement of pH
Author(s): Charles Milo; Beauford W. Atwater
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Paper Abstract

The fiber optic pH sensor described is based on a colorimetric pH indicator and a pH insensitive luminescent compound co-immobilized in a hydrophilic polymer. The absorption spectra of the pH indicator and the luminescent compound overlap. Consequently, the competitive absorption between the pH indicator and the luminescent compound results in modulation of the sensor emission intensity as a function of pH in the measurement media. The feasibility of this pH measurement technique is demonstrated with on-line testing of fiber optic sensors.

Paper Details

Date Published: 30 April 1993
PDF: 14 pages
Proc. SPIE 1796, Chemical, Biochemical, and Environmental Fiber Sensors IV, (30 April 1993); doi: 10.1117/12.143519
Show Author Affiliations
Charles Milo, Devices for Vascular Intervention, Inc. (United States)
Beauford W. Atwater, British Oxygen Corp. (United States)


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

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