Multimode fiber-optic temperature sensor system based on dual-wavelength difference absorption principle

Zaixuan Zhang; Dan Lin; Xiao Fang; Shangzhong Jing

doi:10.1117/12.50014

1 August 1991 Multimode fiber-optic temperature sensor system based on dual-wavelength difference absorption principle

Zaixuan Zhang, Dan Lin, Xiao Fang, Shangzhong Jing

Proceedings Volume 1572, International Conference on Optical Fibre Sensors in China OFS(C) '91; (1991) https://doi.org/10.1117/12.50014
Event: International Conference on Optical Fibre Sensors in China, 1991, Wuhan, China

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.

Citation Download Citation

Zaixuan Zhang, Dan Lin, Xiao Fang, and Shangzhong Jing "Multimode fiber-optic temperature sensor system based on dual-wavelength difference absorption principle", Proc. SPIE 1572, International Conference on Optical Fibre Sensors in China OFS(C) '91, (1 August 1991); https://doi.org/10.1117/12.50014

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