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Proceedings Paper

All-fiber heterodyne interferometer for vibration measurements in audible frequency range
Author(s): Christophe Gorecki; Tijani Gharbi; Michel Spajer
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Paper Abstract

The calibration of the novel laser heterodyne interferometry system for measurement of vibrations of small amplitude in the audible frequency range is described. A frequency-shifted reference beam is compared with an unshifted test beam that is phase modulated by a vibrating surface. Vibration displacements down 10 nm in the frequency range from 150 Hz to 10 KHz are measured. The system is ideally suited for biological movement analysis, for example, the acoustic emission evaluation from human cochlea excited by electrical stimuli.

Paper Details

Date Published: 15 February 1993
PDF: 13 pages
Proc. SPIE 1756, Interferometry: Applications, (15 February 1993); doi: 10.1117/12.140801
Show Author Affiliations
Christophe Gorecki, Univ. de Franche-Comte/CNRS URA 214 (France)
Tijani Gharbi, C.E.R.A.H. (France)
Michel Spajer, Univ. de Franche-Comte/CNRS URA 214 (France)


Published in SPIE Proceedings Vol. 1756:
Interferometry: Applications
Ryszard J. Pryputniewicz; Gordon M. Brown; Werner P. O. Jueptner, Editor(s)

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