A new velocimetry using the four probing points system consisting of fiber-optic low-coherence interferometers are proposed and demonstrated. The proposed velocimetry is capable of measuring simultaneously the 3-D velocity vector (absolute velocity and the velocity direction). The velocity vector distribution along depth can also be measured in the present method by scanning the mirror positions in the reference arms. Moreover, the 3-D velocity vector distribution can be measured by sweeping the mirror position for z-direction distribution and by moving the fiber probes for x- and y-direction distribution. The high spatial resolution of the present method enables us to apply the present method to sensing for velocity vector distributions of a boundary layer in liquid flow or of a vortex flow, and of a living body, which are very important in the field of fluid mechanics and the practical application. It is very difficult in conventional methods to measure the velocity vector in these application areas.


    Access

    Check access

    Check availability in my library

    Order at Subito €


    Export, share and cite



    Title :

    Vector velocimetry by using fiber-optic low coherence interferometers


    Contributors:
    Imai, Y. (author) / Tanaka, K. (author)


    Publication date :

    2002-01-01


    Size :

    297736 byte




    Type of media :

    Conference paper


    Type of material :

    Electronic Resource


    Language :

    English



    Tunable-contrast fiber-optic polarization interferometers

    Sumriddetchkajorn, S. / Guo li Taiwan da xue / Taiwan guang xue gong cheng xue hui | British Library Conference Proceedings | 2003



    Fiber-Optic Probe For Laser Velocimetry

    Lynch, Dana H. / Mcalister, Kenneth W. / Gunter, William D., Jr. | NTRS | 1992


    Velocity vector sensing by using fiber optic low-coherence interferometer [4416-29]

    Imai, Y. / Tanaka, K. / Optical Society of Japan et al. | British Library Conference Proceedings | 2001


    Precise cavity length control in fiber optic extrinsic Fabry-Perot interferometers

    Juncheng Xu, / Pickrell, G.R. / Cooper, K.L. et al. | IEEE | 2005