Doppler-angle measurement in highly scattering media

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. (C) 2000 Optical Society of America OCIS codes: 170.4500, 170.3340, 060.2420, 290.7050.