Non-interferometric phase retrieval for phase-modulated holographic data storage (Conference Presentation)

Xiao Lin; Jianying Hao; Mingjie Zheng; Tiangui Dai; Hui Li; Xiaodi Tan

doi:10.1117/12.2509491

13 March 2019 Non-interferometric phase retrieval for phase-modulated holographic data storage (Conference Presentation)

Xiao Lin, Jianying Hao, Mingjie Zheng, Tiangui Dai, Hui Li, Xiaodi Tan

Author Affiliations +

Proceedings Volume 10944, Practical Holography XXXIII: Displays, Materials, and Applications; 109440S (2019) https://doi.org/10.1117/12.2509491
Event: SPIE OPTO, 2019, San Francisco, California, United States

Abstract

A non-interferometric phase retrieval method in the phase-modulated holographic data storage system is proposed. This method can not only avoid phase ambiguity issue with interferometric, but also increase the capacity by reducing media consumption. Iterative Fourier transform (IFT) algorithm is one of easiest non-interferometry methods. We choose to use IFT algorithm due to its compact and stable realized system and simple single-shot operation. Strong constraint conditions such as phase-only and embedded data which are known phase values of the certain positions on the encoded data page are provided to realize accurate and quick phase retrieval in the holographic data storage system. We demonstrated the phase retrieval process of the recorded 4-level phase pattern in the media experimentally. Besides, we can realize one-time Nyquist frequency recording which is the limitation of recording area by using the non-interferometric phase retrieval method and the periodicity of Fourier frequency spectrum. Therefore, the media consumption can be reduced by 35%. Eventually, we can increase storage capacity by at least 1.5 times.

Conference Presentation

Citation Download Citation

Xiao Lin, Jianying Hao, Mingjie Zheng, Tiangui Dai, Hui Li, and Xiaodi Tan "Non-interferometric phase retrieval for phase-modulated holographic data storage (Conference Presentation)", Proc. SPIE 10944, Practical Holography XXXIII: Displays, Materials, and Applications, 109440S (13 March 2019); https://doi.org/10.1117/12.2509491

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KEYWORDS

Phase retrieval

Data storage

Holographic data storage systems

Holography

Fourier transforms

Interferometry

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