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Proceedings Paper

A novel all-fiber velocity measurement system with high fringe contrast
Author(s): Peng Lin; Bo Jia; Guangwei Hong
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Paper Abstract

A novel all-fiber vibration velocity measurement system with high contrast of interfering fringes is proposed and demonstrated. The configuration utilizes polarization beam splitters to remove the unwanted reflected light beams. With a shaker vibration measurement experiment, it is shown that the system can successfully improve the interfering fringe contrast to 69.8% significantly and the results can be better if there is no counter reflecting light in 3×3 coupler. The system is also convenient in free-surface velocity measurement application of the shock wave and the experiment achieves long time measurement (700μs) in strong disturbance.

Paper Details

Date Published: 29 August 2013
PDF: 8 pages
Proc. SPIE 8914, International Symposium on Photoelectronic Detection and Imaging 2013: Fiber Optic Sensors and Optical Coherence Tomography, 89140Y (29 August 2013); doi: 10.1117/12.2034472
Show Author Affiliations
Peng Lin, Fudan Univ. (China)
Bo Jia, Fudan Univ. (China)
Guangwei Hong, Fudan Univ. (China)


Published in SPIE Proceedings Vol. 8914:
International Symposium on Photoelectronic Detection and Imaging 2013: Fiber Optic Sensors and Optical Coherence Tomography
Yunjiang Rao, Editor(s)

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