Photonic doppler velocimetry system based on bare fiber probe

Jian Wang; Chong-lian Bi; Hong-liang Xiang; Chong-qing Wu

doi:10.1117/12.970245

7 November 2012 Photonic doppler velocimetry system based on bare fiber probe

Jian Wang, Chong-lian Bi, Hong-liang Xiang, Chong-qing Wu

Proceedings Volume 8421, OFS2012 22nd International Conference on Optical Fiber Sensors; 84219L (2012) https://doi.org/10.1117/12.970245
Event: OFS2012 22nd International Conference on Optical Fiber Sensor, 2012, Beijing, China

Abstract

It is proposed to use bare fiber bundle as probes of photonic Doppler velocimetry (PDV) system to improve the spatial resolution of measurement. Two-point velocity measurement with spatial resolution of 375μm is experimentally realized. Because of smaller probe spacing, the measuring results obtained from a probe would be influenced by the reflected light from another probe. Theoretical and experimental results show that the measuring results are not affected by the stray light when the target surface has the same velocity, and the measuring errors are related not only with the velocity difference of two points but also with the intensities and the initial phases of the sensing and stray light when the target surface has different velocity.

Citation Download Citation

Jian Wang, Chong-lian Bi, Hong-liang Xiang, and Chong-qing Wu "Photonic doppler velocimetry system based on bare fiber probe", Proc. SPIE 8421, OFS2012 22nd International Conference on Optical Fiber Sensors, 84219L (7 November 2012); https://doi.org/10.1117/12.970245

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