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Improvement of measurement accuracy of fibre Bragg grating sensor systems by use of gas absorption lines as multi-wavelength references

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5 Author(s)
Chan, C.C. ; Dept. of Electr. Eng., Hong Kong Polytech., Kowloon, China ; Jin, W. ; Ho, H.L. ; Wang, D.N.
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The use of gas absorption lines as multi-wavelength references to enhance the measurement accuracy of fibre Bragg grating sensors is reported. Experiments with a three-FBG-sensor array interrogated by a tunable laser demonstrated an overall measurement accuracy of ~2 pm

Published in:

Electronics Letters  (Volume:37 ,  Issue: 12 )