Fiber optical moire interferometer and its application in configuration or deformation measurement

Weimin Sun; Libo Yuan; Chunying Guan

doi:10.1117/12.465721

20 September 2002 Fiber optical Moire interferometer and its application in configuration or deformation measurement

Weimin Sun, Libo Yuan, Chunying Guan

Proceedings Volume 4919, Advanced Materials and Devices for Sensing and Imaging; (2002) https://doi.org/10.1117/12.465721
Event: Photonics Asia, 2002, Shanghai, China

Abstract

Fiber optical Moire interferometer is a new technology in configuration or deformation measurement. It is a potential powerful microstructure mapping technique, which is important in fine processing, product monitoring, NDT, etc. Comparing with the traditional measurement methods, the optical Moire interferometer has the advantage as flexible, scale-controllable, etc. Some configurations of the fiber optic Moire interferometer are described in this paper. The ends of several polarization maintaining fibers set together under special design. They work as point optical sources to produce fringe patterns. The appearance and the trend of the fringes indicate the information of the shape or deformation of an object. Both the simplest design, only two fibers are used as the illumination source, and the complex designs, three or four fibers are put together under different distribution, are discussed in this paper. The more fibers are introduced, the more complex is the fringe pattern with more information. A series of numerical simulations have been done to compare with the result of the experiments.

Citation Download Citation

Weimin Sun, Libo Yuan, and Chunying Guan "Fiber optical Moire interferometer and its application in configuration or deformation measurement", Proc. SPIE 4919, Advanced Materials and Devices for Sensing and Imaging, (20 September 2002); https://doi.org/10.1117/12.465721

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KEYWORDS

Fringe analysis

Moire patterns

Interferometers

Fiber optics

Laser optics

Fiber optics tests

Image processing

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