Improved phase retrieval in holographic data storage based on a designed iterative embedded data

Abstract

Embedded data are used to retrieve phases quicker with high accuracy in phase-modulated holographic data storage (HDS). We propose a method to design an embedded data distribution using iterations to enhance the intensity of the high-frequency signal in the Fourier spectrum. The proposed method increases the anti-noise performance and signal-to-noise ratio (SNR) of the Fourier spectrum distribution, realizing a more efficient phase retrieval. Experiments indicate that the bit error rate (BER) of this method can be reduced by a factor of one after 10 iterations.

Graphical abstract

Keywords

holographic data storage (HDS) / phase retrieval / embedded data / high frequency

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Acknowledgements

This work was partially supported by the Open Project Program of Wuhan National Laboratory for Optoelectronics (No. 2019WNLOKF007) and the National Key R & D Program of China (No. 2018YFA0701800).

Disclosures

The authors declare no conflicts of interest.

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