Journal
OPTIK
Volume 124, Issue 24, Pages 6946-6949Publisher
ELSEVIER GMBH
DOI: 10.1016/j.ijleo.2013.05.156
Keywords
Fiber optics temperature sensors; Fabry-Perot; Silicon thermo-optics effect
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Funding
- National Natural Science Foundation of China [41275042]
- Universities Natural Science Research Project of Jiangsu Province [12KJB510011]
- Natural Science Foundation of Jiangsu Province [BK2012460]
- Priority Academic Program Development of Jiangsu Higher Education Institutions (PAPD)
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A temperature sensor based on the thermo-optics effect of single crystal silicon diaphragm was proposed and studied. The temperature measurement mechanism by using single crystal silicon diaphragm was theoretically analyzed and found the relation between temperature measurement range and the thickness of single crystal diaphragm. It was found that when the temperature changed from 20 degrees C to 48 degrees C, the reflected resonant peak wavelength was shifted which was detected by using the dual-wavelength signal demodulation method. Experimental results for temperature measurement demonstrated reasonable linearity and repeatability, related linear regression coefficient of the experimental result is 99.94%. The study would be of utility value for the design and fabrication of silicon-based sensors which were used to measure pressure or the other physical quantities. (C) 2013 Elsevier GmbH. All rights reserved.
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