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Application of fiber optic interferometers for Cook-off measurements

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Author: Cheng, L.K. · Smorenburg, C. · Scholtes, J.H.G. · Meer, B.J. van der
Source:Proceedings 24th International Congress on High-Speed Photography and Photonics, 24-29 September 2000, Sendai, Japan, 4183, 444-452
Proceedings of SPIE - The International Society for Optical Engineering
Identifier: 235908
Keywords: Fiber optics · High-speed phenomena · Interferometry · Mach-Zehnder · Sensors · Coherent light · Digital signal processing · Interferometry · Light polarization · Light propagation · Light sources · Optical fibers · Optical systems · Optical testing · Refractive index · Sensitivity analysis · Ultrafast phenomena · Digital signal analyzers (DSA)


A fiber optic interferometer comprising of a Sagnac interferometer and a Mach-Zehnder interferometer was developed. The interferometer enabled detection of explosive subtonic expansion velocities during the Cook-off test. The system enabled a comparison between the results of the two interferometer systems caused by the application of two different sensing fibers. An efficient signal processing scheme was proposed for analyzing the interferometric signals.