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Dual Temperature and Strain Sensor Using a Combined Fiber Bragg Grating and Fluorescence Intensity Ratio Technique in Er3+-doped Fiber.

Trpkovski, Steven and Wade, Scott A and Baxter, Gregory W and Collins, Stephen F (2003) Dual Temperature and Strain Sensor Using a Combined Fiber Bragg Grating and Fluorescence Intensity Ratio Technique in Er3+-doped Fiber. Review of scientific instruments, 74 (5). pp. 2880-2885. ISSN 0034-6748

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Abstract

A prototype dual temperature–strain point sensor has been demonstrated by combining a short length of erbium-doped fiber in close proximity to a fiber Bragg grating. By measurement of the green fluorescence intensity ratio in erbium (Er31) and the Bragg wavelength shift of a fiber Bragg grating the temperature and strain are deduced. Calibrations reveal that the sensitivity of the fluorescence intensity ratio in Er31-doped fiber to strain is near zero. Three alternative analysis methods were used; the conventional matrix method, and two variations of a technique that provides a better fit to the fluorescence intensity ratio temperature data using a quadratic. The quadratic methods considered two cases of the strain dependence of the fluorescence intensity ratio, namely, zero and linear. The matrix method showed standard deviations of 2.2 °C and 20.6 m«, while the quadratic fit with a linear strain dependence yielded 1.0 °C and 22.9 m« over temperature and strain ranges of 18–150 °C and 350–2534 m«, respectively.

Item Type: Article
Uncontrolled Keywords: ResPubID: 5481. dual temperature, fluorescence intensity ratio technique, detectors, fluorescence, erbium
Subjects: FOR Classification > 0906 Electrical and Electronic Engineering
Faculty/School/Research Centre/Department > School of Engineering and Science
Depositing User: VUIR
Date Deposited: 05 Oct 2010 01:26
Last Modified: 29 Aug 2011 04:43
URI: http://vuir.vu.edu.au/id/eprint/2142
DOI: 10.1063/1.1569406
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Citations in Scopus: 18 - View on Scopus

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