Abstract

A dissolved oxygen sensor made of plastic optical fiber as the substrate and dichlorotris (1, 10-phenanthroline) ruthenium as a fluorescence indicator is studied. Oxygen quenching characteristics of both intensity and phase were measured; the obtained characteristics showed deviation from the linear relation described by the Stern–Volmer equation. A two-layer model is proposed to explain the deviation, and main parameters can be deduced with the model.

© 2009 Optical Society of America

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