High-dimensional data storage scheme based on petal optical vortex multiplexing holography

Holographic data storage (HDS) has attracted considerable interest as a promising route to large-capacity and high-density recording, enabled by volume multiplexing, high transfer rates, and parallel readout. Here, we propose a high-dimensional data storage scheme based on petal optical vortex (POV) multiplexing holography (HDDS-POVMH), where multiple information layers are encoded into a single global multiplexed hologram. By exploiting the dual degrees of freedom (ℓ, φ) of the POV, ℓ provides layer addressing while φ enables M-ary pointwise phase modulation, and the stored symbols are reconstructed using an intensity-based phase decoding (IPD) algorithm from the retrieved dot-array intensities. The storage capacity scales with the dot-matrix sampling points per layer, the M-ary phase alphabet set by φ, and the number of ℓ-addressed multiplexed layers supported by POV orthogonality. In representative single- and dual-layer demonstrations, IPD achieves error-free symbol reconstruction, supporting a reliable and scalable high-dimensional HDS framework. This HDDS-POVMH scheme exhibits significant potential for next-generation high-volume archival systems, large-scale data repositories, and optical-network storage applications.