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28 September 2005 Digital holographic interferometry system based on all fiber phase modulation
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Digital holographic interferometry (DHI) is a modern technique, which allows direct access to the interference phase in holographic interferometry. In order to implement DHI in commercial application the system has to fulfill several requirements including: automatic data capture, compactness and easiness of usage (often remote), high quality of output data. In order to perform those conditions we propose the fiber optics based DHI system with enhanced quality of holograms and decreased sensitivity to vibrations and environmental changes. These special features are achieved by: fiber optics based light delivery endoscope and possibility to introduce all-fibre phase in one of the E-M beams manipulation, monolithic design of sensor head, which decrease sensitivity of the system to mechanical vibrations, combined passive and active noise suppression and DH quality enhancement. The design considerations and the results of initial experiments performed at the model of the fibre optics based DHI system are presented and discussed.
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A. Michalkiewicz, P. Marc, M. Kujawinska, and L. R. Jaroszewicz "Digital holographic interferometry system based on all fiber phase modulation", Proc. SPIE 5952, Optical Fibers: Applications, 59520C (28 September 2005);

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