Multiplexing Perfect Optical Vortex for Holographic Data Storage

Author:

Zhu Jialong12ORCID,Zou Fucheng3,Wang Le2,Lu Xiaodong1,Zhao Shengmei24

Affiliation:

1. School of Information Engineering, Suqian University, Suqian 223800, China

2. Institute of Signal Processing and Transmission, Nanjing University of Posts and Telecommunications (NUPT), Nanjing 210003, China

3. School of Electronic Information and Automation, Aba Teachers University, Wenchuan 623002, China

4. National Laboratory of Solid State Microstructures, Nanjing University, Nanjing 210093, China

Abstract

Holographic data storage (HDS) has emerged as a promising technology for high-capacity data storage. In this study, we propose a novel approach to enhance the storage density in HDS through a multiplexing perfect optical vortex (POV) hologram. By utilizing the orthogonality property of POV, different POV-recording holograms can be multiplexed to store multiple data pages within the single hologram. Compared with the conventional optical vortex, the better storage density of POV through proof-of-principle experiments is demonstrated. For the POV-multiplexing hologram of six data pages, each one can be reconstructed successfully. In addition, we investigate the impact of axicon periods and multiplexing numbers on the storage performance. Our results reveal that an appropriate selection of axicon periods and multiplexing numbers is crucial to balance storage density and bit error rate (BER). The proposed multiplexing approach offers a valuable solution for achieving high-density and secure holographic data storage systems.

Funder

National Natural Science Foundation of China

Natural Science Foundation of Suqian

Aba Teachers University Project

Open Research Fund of National Laboratory of Solid State Microstructures

Natural Science Foundation of Jiangsu Province

Publisher

MDPI AG

Subject

Radiology, Nuclear Medicine and imaging,Instrumentation,Atomic and Molecular Physics, and Optics

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