Single-mode fiber optic in electronic speckle pattern interferometry

Wei Liu; Yushan Tan; Xianglin Wang; Haitao Wang; Lijun Jiang

doi:10.1117/12.142068

1 April 1993 Single-mode fiber optic in electronic speckle pattern interferometry

Wei Liu, Yushan Tan, Xianglin Wang, Haitao Wang, Lijun Jiang

Proceedings Volume 1982, Photoelectronic Detection and Imaging: Technology and Applications '93; (1993) https://doi.org/10.1117/12.142068
Event: Photoelectronic Detection and Imaging: Technology and Applications '93, 1993, Beijing, China

Abstract

A new technique has been developed for applying fiber optics to electronic speckle pattern interferometry (ESPI) to measure unbonded faults in the carbon/epoxy honeycomb composite. The fiberized ESPI system we designed is introduced in detail. This paper also develops the theoretical and experimental approach of singlemode fiber optics phase-step ESPI. This approach produces a significant improvement in fringe contrast and in reducing image processing computational effort. We adapted the singlemode fiber piezoelectric transducer as modulator and the two-step phase shifting method.

Citation Download Citation

Wei Liu, Yushan Tan, Xianglin Wang, Haitao Wang, and Lijun Jiang "Single-mode fiber optic in electronic speckle pattern interferometry", Proc. SPIE 1982, Photoelectronic Detection and Imaging: Technology and Applications '93, (1 April 1993); https://doi.org/10.1117/12.142068

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