Fibre vibrometer with three-phase fringe-analysis
Fibre vibrometer with three-phase fringe-analysis
A fiber-remoted, non-contact, optical surface-vibrometer which uses no source wavelength modulation is reported. Three-phase fringe sampling using a 3 x 3 fiber coupler and processing using a digital processor allow automatic multi-fringe unwrapping, sub-fringe interpolation and insensitivity to interferogram intensity and contrast variations. A noise-equivalent sensitivity of 50 µ.fringe/√Hz is demonstrated.
Johnson, M.
f641d826-cdd9-48dd-a328-5faa2ff570ff
Delaporte, Y.
0d3ef96d-8158-4314-95c7-04aad1901f55
1993
Johnson, M.
f641d826-cdd9-48dd-a328-5faa2ff570ff
Delaporte, Y.
0d3ef96d-8158-4314-95c7-04aad1901f55
Abstract
A fiber-remoted, non-contact, optical surface-vibrometer which uses no source wavelength modulation is reported. Three-phase fringe sampling using a 3 x 3 fiber coupler and processing using a digital processor allow automatic multi-fringe unwrapping, sub-fringe interpolation and insensitivity to interferogram intensity and contrast variations. A noise-equivalent sensitivity of 50 µ.fringe/√Hz is demonstrated.
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Published date: 1993
Organisations:
Optoelectronics Research Centre
Identifiers
Local EPrints ID: 78265
URI: http://eprints.soton.ac.uk/id/eprint/78265
ISSN: 0030-4018
PURE UUID: 09734349-6947-4404-851e-b24c43fbc604
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Date deposited: 11 Mar 2010
Last modified: 14 Mar 2024 00:10
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Contributors
Author:
M. Johnson
Author:
Y. Delaporte
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