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Stabilising fibre interferometers

By Haydn Martin and Xiang Jiang


Fibre interferometry holds many advantages for the online measurement of high precision surfaces. However, the method requires stabilising against path length change due to temperature drift and vibration. A method of stabilising such an interferometer using intensity feedback was examined and shown to be ineffective at low frequencies. A second method, using real-time calculated phase feedback was also investigated, and was observed to be more robust

Topics: T1
Publisher: University of Huddersfield
Year: 2008
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