Measurements of velocity distribution along depth using low coherence tomography

Yoh Imai; Kazuhiro Tanaka; Hiroshi Higo

doi:10.1117/1.602451

1 April 2000 Measurements of velocity distribution along depth using low coherence tomography

Yoh Imai, Kazuhiro Tanaka, Hiroshi Higo

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Optical Engineering, Vol. 39, Issue 4, (April 2000). https://doi.org/10.1117/1.602451

A new optical measurement method of a flow velocity distribution along the depth using low coherence interference techniques is proposed and demonstrated. In the proposed method, fluctuations of the interference signal formed with the reference and backscattering lights are detected by the optical heterodyne scheme. It is shown experimentally that the width of the spectrum of the interference signal is proportional to the flow velocity. The dynamic range is determined by the time constants of the fast Fourier transform (FFT) processor and lock-in amplifier used in the experiment.

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Yoh Imai, Kazuhiro Tanaka, and Hiroshi Higo "Measurements of velocity distribution along depth using low coherence tomography," Optical Engineering 39(4), (1 April 2000). https://doi.org/10.1117/1.602451

Published: 1 April 2000

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