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Proceedings Paper

Analysis of noise reduction performance with the rotated diffuser in Fizeau interferometer of a large aperture
Author(s): Jiaying Zhang; Hongjun Wang; Xueliang Zhu; Bingcai Liu; Ailing Tian
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Paper Abstract

Since the coherent noise affected the quality of the Fizeau’s interferograms in the large aperture, the coherence of the beam was changed by rotated diffuser to reduce the noise of the interfering system. The relationships between the frequency of the rotated diffuser, the contrast of the fringes and the SNR of the system were simulated. Then, the control parameters of rotated diffuser would be required in the optimum interference fringe. The interference images were obtained under different control parameters, and the fringe contrast and system SNR of each image were analyzed. The results showed that the contrast can be reduced by choosing the proper frequency of the rotated diffuser in a certain extent, but the SNR can be improved effectively and it was convenient to process the interference image later.

Paper Details

Date Published: 28 February 2017
PDF: 5 pages
Proc. SPIE 10256, Second International Conference on Photonics and Optical Engineering, 102560L (28 February 2017); doi: 10.1117/12.2270578
Show Author Affiliations
Jiaying Zhang, Xi'an Technological Univ. (China)
Hongjun Wang, Xi'an Technological Univ. (China)
Xueliang Zhu, Xi'an Technological Univ. (China)
Bingcai Liu, Xi'an Technological Univ. (China)
Ailing Tian, Xi'an Technological Univ. (China)

Published in SPIE Proceedings Vol. 10256:
Second International Conference on Photonics and Optical Engineering
Chunmin Zhang; Anand Asundi, Editor(s)

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