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Calibration of probe misalignment in point-diffraction interferometer
Author(s): Chao Wang; Daodang Wang; Zhongming Xie; Ming Kong; Jun Zhao; Lihua Lei; Yanhua Zeng; Wentao Zhang
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Paper Abstract

The fiber point-diffraction interferometer provides a feasible method for the measurement of three-dimensional absolute displacement, in which the fiber point-diffraction sources generating coherent spherical reference waves are required to be parallel placed in the testing probe. However, the misalignment in the actual probe could introduce significant error in the displacement measurement result, and it also places high requirement on the adjustment of testing probe. A method based on phase difference in the axial displacement is proposed to calibrate the probe misalignment, and the numerical simulation is carried out to demonstrate the feasibility of the proposed method. The proposed method lowers the requirement on the processing of testing probe.

Paper Details

Date Published: 5 November 2018
PDF: 8 pages
Proc. SPIE 10815, Optical Design and Testing VIII, 1081505 (5 November 2018); doi: 10.1117/12.2501154
Show Author Affiliations
Chao Wang, China Jiliang Univ. (China)
Daodang Wang, China Jiliang Univ. (China)
Zhongming Xie, China Jiliang Univ. (China)
Ming Kong, China Jiliang Univ. (China)
Jun Zhao, China Jiliang Univ. (China)
Lihua Lei, Shanghai Institute of Measurement and Testing Technology (China)
Yanhua Zeng, Shanghai Institute of Measurement and Testing Technology (China)
Wentao Zhang, Guilin Univ. of Electronic Technology (China)


Published in SPIE Proceedings Vol. 10815:
Optical Design and Testing VIII
Yongtian Wang; Tina E. Kidger; Kimio Tatsuno, Editor(s)

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