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Proceedings Paper

Interferometric system controlled by virtual instrumentation for differential thermal analysis
Author(s): L. C. Gonçalves; G. González-Aguilar; J. M. Baptista; P. A. S. Jorge
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Paper Abstract

This work describes the implementation of an optical fiber interferometric system for differential thermal analysis. The system is based on a white light Mach-Zehnder configuration, with serrodyne phase modulation, to interrogate two identical fiber Bragg gratings (FBG) in a differential scheme. Operation and signal processing with low cost digital instrumentation developed in Labview environment enabled FBG temperature measurement with a ±0.012ºC resolution nearly matching the performance of standard hardware. Preliminary results were obtained, where mixed samples of acetone and methanol could be successfully identified, indicating the suitability of the system for high accuracy differential thermal analysis using low cost instrumentation.

Paper Details

Date Published: 17 May 2011
PDF: 4 pages
Proc. SPIE 7753, 21st International Conference on Optical Fiber Sensors, 77531U (17 May 2011); doi: 10.1117/12.886019
Show Author Affiliations
L. C. Gonçalves, INESC Porto (Portugal)
Univ. da Madeira (Portugal)
G. González-Aguilar, INESC Porto (Portugal)
J. M. Baptista, INESC Porto (Portugal)
Univ. da Madeira (Portugal)
P. A. S. Jorge, INESC Porto (Portugal)

Published in SPIE Proceedings Vol. 7753:
21st International Conference on Optical Fiber Sensors
Jacques Albert; Wojtek J. Bock, Editor(s)

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