Title :
Low coherence, interferometric fibre optic vibrometer using novel optical signal processing scheme
Author :
Weir, K. ; Boyle, W.J.O. ; Palmer, Andrew W. ; Grattan, K.T.V.
Author_Institution :
Dept. of Electr., Electron. & Inf. Eng., City Univ., London, UK
Abstract :
Results are presented for the operation of a low coherence interferometric vibrometer using a fibre optic probe. A novel processing interferometer arrangement allows the absolute displacement of a vibrating surface to be reconstructed, and the use of a low coherence light source means unwanted spurious signals can be suppressed. A signal processing scheme to provide real time monitoring of the surface displacement is also possible.
Keywords :
fibre optic sensors; light interferometers; monitoring; optical information processing; vibration measurement; absolute displacement; fibre optic probe; interferometric vibrometer; low coherence light source; optical signal processing scheme; processing interferometer arrangement; real time monitoring; surface displacement; vibrating surface;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:19911036
