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 0034-6748Full text for this resource is not available from the Research Repository.
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.
|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
|Date Deposited:||05 Oct 2010 01:26|
|Last Modified:||29 Aug 2011 04:43|
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|Citations in Scopus:||18 - View on Scopus|
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