An improved phase retrieval method in holographic data storage based on embedded encoding

Changyu Yu; S. Wang; Ruixian Chen; Jianying Hao; Qijing Zheng; Jinyu Wang; Xianying Qiu; Dakui Lin; Yi Yang; Hui Li; Xiaodi Tan; Xiao Lin

doi:10.1117/12.2616176

27 October 2021 An improved phase retrieval method in holographic data storage based on embedded encoding

Changyu Yu, S. Wang, Ruixian Chen, Jianying Hao, Qijing Zheng, Jinyu Wang, Xianying Qiu, Dakui Lin, Yi Yang, Hui Li, Xiaodi Tan, Xiao Lin

Author Affiliations +

Proceedings Volume 11926, Optical Manipulation and Structured Materials Conference 2021; 1192619 (2021) https://doi.org/10.1117/12.2616176
Event: SPIE Technologies and Applications of Structured Light, 2021, Online, Japan

Abstract

Phase-modulation holographic data storage is imaging on the Fourier plane, and the imaging quality has a great influence on phase retrieval. The iterative Fourier transform algorithm in the non-interference phase retrieval algorithm is widely used because of its simple and stable system. By adding embedded data to the phase encoding method, the number of iterations can be effectively reduced. However, the intensity of high-frequency information in Fourier intensity is weaker and more susceptible to noise. To solve this problem, this paper proposes to use embedded data to improve the intensity of high-frequency information in the Fourier intensity distribution, thereby improving noise immunity. In simulation, the convergence speed of BER (the bit error rate) is faster under the same number of iterations.

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Changyu Yu, S. Wang, Ruixian Chen, Jianying Hao, Qijing Zheng, Jinyu Wang, Xianying Qiu, Dakui Lin, Yi Yang, Hui Li, Xiaodi Tan, and Xiao Lin "An improved phase retrieval method in holographic data storage based on embedded encoding", Proc. SPIE 11926, Optical Manipulation and Structured Materials Conference 2021, 1192619 (27 October 2021); https://doi.org/10.1117/12.2616176

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