We describe a dual-channel optical low-coherence reflectometer for accurate measurement of Doppler angles in highly scattering media. Accurate fluid-flow velocity estimation requires measurement of the Doppler shift and angle. Estimated values of the Doppler angle and average fluid-flow velocity from experimental data are in good agreement with preset values.
© 2000 Optical Society of America
(060.2420) Fiber optics and optical communications : Fibers, polarization-maintaining
(170.3340) Medical optics and biotechnology : Laser Doppler velocimetry
(170.4500) Medical optics and biotechnology : Optical coherence tomography
(290.7050) Scattering : Turbid media
Digant P. Davé and Thomas E. Milner, "Doppler-angle measurement in highly scattering media," Opt. Lett. 25, 1523-1525 (2000)