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Fibre Optical Multicomponent LDA-System Using the Optical Frequency Difference of Powerful DBR-Laser Diodes

  • H. Müller
  • H. Wang
  • D. Dopheide
Conference paper

Abstract

A fibre optical directional two component LDA utilizing the optical frequency differences of three fibre coupled 100 mW DBR laser diodes is presented. The resulting frequency shifts are used for the channel separation as well as for the directional discrimination. Additionally the use of one laser source for each LDA beam allows to multiply the laser power in the measuring volume.

First experimental results of two dimensional directional velocity measurements with the realized adjustment insensitive powerful LDA set-up are presented.

Keywords

Directional multicomponent LDA fiber optics frequency shift DBR lasers 

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References

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Copyright information

© Springer-Verlag Berlin Heidelberg 1997

Authors and Affiliations

  • H. Müller
    • 1
  • H. Wang
    • 1
  • D. Dopheide
    • 1
  1. 1.Physikalisch-Technische Bundesanstalt (PTB)Laboratory for Fluid Flow Measuring TechniquesBraunschweigGermany

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