Title :
Fringe order identification in optical fibre white-light interferometry using centroid algorithm method
Author :
Chen, S. ; Palmer, Andrew W. ; Grattan, K.T.V.
Author_Institution :
Dept. of Electron. Electr. & Inf. Eng., City Univ., London, UK
fDate :
3/12/1992 12:00:00 AM
Abstract :
A special digital signal processing technique based on a centroid algorithm is presented. It is used to identify the central fringe from the output fringe pattern produced by an optical fibre white-light interferometer system to achieve a large-dynamic-range and absolute phase measurement. A computer simulation and subsequent experimental verification have shown that this technique is capable of sustaining a high operating noise level.
Keywords :
fibre optic sensors; identification; light interferometry; optical fibres; phase measurement; signal processing; absolute phase measurement; adaptive filtering; centroid algorithm method; computer simulation; digital signal processing; dynamic-range; fringe order identification; optical fibre; output fringe pattern; white-light interferometry;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:19920349
