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Proceedings Paper

Fibre optic anemometry using an optical delay cavity technique
Author(s): B. T. Meggitt; William J. O. Boyle; Kenneth T. V. Grattan; Andrew W. Palmer; Yanong N. Ning
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Paper Abstract

Limitations on the performance and capabilities of conventional fibre optic Doppler Anemometers (FODAs) are highlighted in the context of fluid flow measurement. In order to overcome these difficulties, a novel optical fibre signal processing scheme is outlined, based on a low coherence interferometric approach using an optical delay cavity matched for the position of the required measurement volume. Both a homodyne and a heterodyne system are discussed and experimental results are presented to verify the feasibility of the proposed method.

Paper Details

Date Published: 1 September 1990
PDF: 9 pages
Proc. SPIE 1314, Fibre Optics '90, (1 September 1990); doi: 10.1117/12.21994
Show Author Affiliations
B. T. Meggitt, King's College London (United Kingdom)
William J. O. Boyle, City Univ./London (United Kingdom)
Kenneth T. V. Grattan, City Univ./London (United Kingdom)
Andrew W. Palmer, City Univ./London (United Kingdom)
Yanong N. Ning, City Univ./London (United Kingdom)

Published in SPIE Proceedings Vol. 1314:
Fibre Optics '90

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