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Proceedings Paper

Multimode fiber-optic temperature sensor system based on dual-wavelength difference absorption principle
Author(s): Zaixuan Zhang; Dan Lin; Xiao Fang; Shangzhong Jing
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Paper Abstract

The multimode fiber optical temperature sensor system is a cobalt salt solution (CoCl26H2O) in the isoptopyl alcohol and water thermochromic transducer based on the dual-wavelength difference absorption principle. The digital locking-in detection, the operation of signal division and temperature calibration is operated by IBM PC computer. The measurement temperature range of the fiber-optic sensor system is 30 degree(s)C to 50 degree(s)C, accuracy is +/- 0.15 degree(s)C, and the temperature resolution is 0.02 degree(s)C. The most accurate measurements resulting from repeated stability tests over 6 and 12 hours (40 degree(s)C) are +/- $0.05 degree(s)C and +/- 0.18 degree(s)C, and the temperature mean is displayed in real time.

Paper Details

Date Published: 1 August 1991
PDF: 4 pages
Proc. SPIE 1572, International Conference on Optical Fibre Sensors in China OFS(C) '91, (1 August 1991); doi: 10.1117/12.50014
Show Author Affiliations
Zaixuan Zhang, China Institute of Metrology (China)
Dan Lin, China Institute of Metrology (China)
Xiao Fang, China Institute of Metrology (China)
Shangzhong Jing, China Institute of Metrology (China)


Published in SPIE Proceedings Vol. 1572:
International Conference on Optical Fibre Sensors in China OFS(C) '91

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