High-frequency pulsed-diode laser anemometry

Robert A. Lockey; Ralph P. Tatam

doi:10.1117/12.195530

30 November 1994 High-frequency pulsed-diode laser anemometry

Robert A. Lockey, Ralph P. Tatam

Proceedings Volume 2341, Interferometry '94: Interferometric Fiber Sensing; (1994) https://doi.org/10.1117/12.195530
Event: International Conference on Interferometry '94, 1994, Warsaw, Poland

Abstract

The use of high-frequency pulsed diodes in laser Doppler anemometry allows the separation of multiple velocity components be means of time division multiplexing. An instrument based on such a technique is optically simpler than a multicomponent continuous-wave (CW) anemometer, but electronically much more complex. By including optical fibers and optical delay lines, the electronic requirements are reduced. In this paper, the practicality of a fiber delay network is demonstrated and the equivalence of pulsed and CW optical fringes is shown. Preliminary results for a 1-dimensional pulsed system are presented.

Citation Download Citation

Robert A. Lockey and Ralph P. Tatam "High-frequency pulsed-diode laser anemometry", Proc. SPIE 2341, Interferometry '94: Interferometric Fiber Sensing, (30 November 1994); https://doi.org/10.1117/12.195530

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