1 December 1994 Light-emitting-diode-based oxygen sensing using evanescent wave excitation of a dye-doped sol-gel coating
Author Affiliations +
Abstract
Two evanescent wave fiber optic sensors for oxygen are reported: one intensity based and the other based on phase fluorimetry. Both sensors employ the quenching by oxygen of the fluorescence from a ruthenium complex trapped in the cagelike structure of a sol-gel-derived porous film on a declad section of multimode optical fiber. The sensors exhibit excellent performance using excitation from new high brightness blue LEDs and establish the viability of low-cost portable sensor devices based on the 501-gel process.
Brian D. MacCraith, Brian D. MacCraith, Gerard O'Keeffe, Gerard O'Keeffe, Aisling K. McEvoy, Aisling K. McEvoy, Colette M. McDonagh, Colette M. McDonagh, John F. McGilp, John F. McGilp, Brendan O'Kelly, Brendan O'Kelly, J. Des O'Mahony, J. Des O'Mahony, Mark Cavanagh, Mark Cavanagh, } "Light-emitting-diode-based oxygen sensing using evanescent wave excitation of a dye-doped sol-gel coating," Optical Engineering 33(12), (1 December 1994). https://doi.org/10.1117/12.184360 . Submission:
JOURNAL ARTICLE
6 PAGES


SHARE
Back to Top