Mr. Xiangxin Xu Profile

Xiangxin Xu

at Beijing Institute of Technology

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Proceedings Article | 10 October 2020 Presentation + Paper

Influences of aberrations on double random phase encoding system

Xiangxin Xu, Jun Chang, Chuhan Wu, Xin Liu, Xiaofang Zhang, Yongjian Zhang

Proceedings Volume 11548, 1154806 (2020) https://doi.org/10.1117/12.2572958

KEYWORDS: Zernike polynomials

Read Abstract +

All optical systems are affected by aberrations, and optical encryption systems with lens are no exception. In order to improve the practicality of the optical encryption system, the influences of aberration on the double random phase encoding (DRPE) system are studied. In this paper, Zernike polynomials are used to express the aberration of the lens. Simulation has been carried out. The influences of different types, coefficients, and combinations of aberrations on DRPE system are analyzed. The results of the study indicate that some Zernike polynomials(such as the 4th Zernike polynomial, etc.)will have a greater impact on DRPE system, while some combinations, such as the combination of the 4th and 9th Zernike polynomials, will reduce the influences of aberrations on DRPE system. Besides, the degree to which DRPE system is affected by aberrations is evaluated by the correlation coefficient between the decrypted image and the plaintext. In order to solve the problem of aberration, two solutions are proposed.

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