The effect of acoustic noise on optical fibre based laser Doppler velocimetry systems


Pannell, C.N., Jones, J.D.C. and Jackson, D.A. (1992) The effect of acoustic noise on optical fibre based laser Doppler velocimetry systems. In, 6th International Symposium on Applications of Laser Techniques to Fluid Mechanics, Lisboa, PT, 20 - 23 Jul 1992.

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Description/Abstract

The potentially serious problem of acoustic noise pick-up in fibre-based LDV systems is addressed both theoretically and experimentally. A new broadening mechanism, called phase noise broadening, is discussed and the magnitude of this effect is estimated for typical LDV systems. This broadening leads to an overestimate of the turbulence index which is more serious for low speed flows. In a representative situation the magnitude of the error in the turbulence index is of the order of 5%.

Item Type: Conference or Workshop Item (Paper)
Related URLs:
Subjects: Q Science > QC Physics
T Technology > TK Electrical engineering. Electronics Nuclear engineering
Divisions: University Structure - Pre August 2011 > Optoelectronics Research Centre
Faculty of Physical Sciences and Engineering > Optoelectronics Research Centre
ePrint ID: 77346
Date Deposited: 11 Mar 2010
Last Modified: 27 Mar 2014 18:57
URI: http://eprints.soton.ac.uk/id/eprint/77346

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