Fringe order identification in optical fibre white-light interferometry using centroid algorithm method |
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| Authors: | Chen S Palmer AW Grattan KTV Meggitt BT |
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| Affiliation: | Dept. of Electron. Electr. & Inf. Eng., City Univ., London, UK; |
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| 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.<> |
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