Mach-Zehnder interferometric filter based planar Doppler velocimetry (MZI-PDV)

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dc.contributor.author Lu, Zenghai H.
dc.contributor.author Charrett, Tom O. H.
dc.contributor.author Ford, Helen D.
dc.contributor.author Tatam, Ralph P.
dc.date.accessioned 2017-09-06T15:23:51Z
dc.date.available 2017-09-06T15:23:51Z
dc.date.issued 2008
dc.identifier.citation Lu ZH, Charrett TOH, Ford HD, Tatam RP, Mach–Zehnder interferometric filter based planar Doppler velocimetry (MZI-PDV), Proceedings of 14th International Symposium on Applications of Laser Techniques to Fluid Mechanics, 7-10 July 2008, Lisbon, Portugal en_UK
dc.identifier.uri http://dspace.lib.cranfield.ac.uk/handle/1826/12453
dc.description.abstract This paper describes the development of a Mach-Zehnder interferometric filter based planar Doppler velocimetry (MZI-PDV) flow measurement technique. The technique uses an unbalanced Mach-Zehnder interferometer (MZI) to convert Doppler frequency shifts into intensity variations. The free spectral range of the interferometric filter can be selected by adjusting the optical path difference of the MZI. This allows the velocity measurement range and resolution to be varied. In contrast to molecular filter based PDV any laser source with single-frequency operation and a narrow linewidth can be used as the requirement for a suitable absorption line is no longer necessary. The processing methods used to extract the velocity information are described and discussed. The construction of a MZI-PDV system that incorporates a phase-locking system designed to stabilize the filter is described and example measurements made on the velocity field of a rotating disc and an axis-symmetric air jet are presented. en_UK
dc.language.iso en en_UK
dc.publisher Springer en_UK
dc.rights ©2008 Springer. This is the Author Accepted Manuscript. Please refer to any applicable publisher terms of use.
dc.title Mach-Zehnder interferometric filter based planar Doppler velocimetry (MZI-PDV) en_UK
dc.type Conference paper en_UK


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