A novel all-fiber velocity measurement system with high fringe contrast

Peng Lin; Bo Jia; Guangwei Hong

doi:10.1117/12.2034472

29 August 2013 A novel all-fiber velocity measurement system with high fringe contrast

Peng Lin, Bo Jia, Guangwei Hong

Proceedings Volume 8914, International Symposium on Photoelectronic Detection and Imaging 2013: Fiber Optic Sensors and Optical Coherence Tomography; 89140Y (2013) https://doi.org/10.1117/12.2034472
Event: ISPDI 2013 - Fifth International Symposium on Photoelectronic Detection and Imaging, 2013, Beijing, China

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.

Citation Download Citation

Peng Lin, Bo Jia, and Guangwei Hong "A novel all-fiber velocity measurement system with high fringe contrast", Proc. SPIE 8914, International Symposium on Photoelectronic Detection and Imaging 2013: Fiber Optic Sensors and Optical Coherence Tomography, 89140Y (29 August 2013); https://doi.org/10.1117/12.2034472

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