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Sensors 2013, 13(6), 7170-7183; doi:10.3390/s130607170

Distributed Fiber Optical Sensing of Oxygen with Optical Time Domain Reflectometry

1,* , 2
1 Institute of Chemistry/Physical Chemistry, University of Potsdam, Karl-Liebknecht-Str. 24-25, Potsdam-Golm 14476, Germany 2 Colibri Photonics GmbH, Am Mühlenberg 11, Potsdam-Golm 14476, Germany
* Author to whom correspondence should be addressed.
Received: 19 February 2013 / Revised: 27 May 2013 / Accepted: 28 May 2013 / Published: 31 May 2013
(This article belongs to the Special Issue Gas Sensors - 2013)
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In many biological and environmental applications spatially resolved sensing of molecular oxygen is desirable. A powerful tool for distributed measurements is optical time domain reflectometry (OTDR) which is often used in the field of telecommunications. We combine this technique with a novel optical oxygen sensor dye, triangular-[4] phenylene (TP), immobilized in a polymer matrix. The TP luminescence decay time is 86 ns. The short decay time of the sensor dye is suitable to achieve a spatial resolution of some meters. In this paper we present the development and characterization of a reflectometer in the UV range of the electromagnetic spectrum as well as optical oxygen sensing with different fiber arrangements.
Keywords: OTDR; optical sensing; molecular oxygen; triangular-[4] phenylene OTDR; optical sensing; molecular oxygen; triangular-[4] phenylene
This is an open access article distributed under the Creative Commons Attribution License (CC BY 3.0).

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Eich, S.; Schmälzlin, E.; Löhmannsröben, H.-G. Distributed Fiber Optical Sensing of Oxygen with Optical Time Domain Reflectometry. Sensors 2013, 13, 7170-7183.

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