Hybrid-Layer Data Storage with High-Orthogonality Random Meta-Channels  

作　　者：Dong Zhao Hongkun Lian Xueliang Kang Kun Huang 

机构地区：[1]Department of Optics and Optical Engineering,University of Science and Technology of China,Hefei 230026,China [2]Anhui Key Laboratory of Optoelectronic Science and Technology,University of Science and Technology of China,Hefei 230026,China [3]School of Electrical and Information Engineering,North Minzu University,Yinchuan 750021,China

出　　处：《Engineering》2025年第2期79-87,共9页工程(英文)

基　　金：the National Key Research and Development Program of China(2022YFB3607300);the National Natural Science Foundation of China(62322512 and 12134013);the Chinese Acad-emy of Sciences Project for Young Scientists in Basic Research(YSBR-049);support from the University of Science and Technology of China’s Center for Micro and Nanoscale Research and Fabrication;supported by the China Postdoctoral Science Foundation(2023M743364);supercomputing system in Hefei Advanced Computing Center and the Supercomputing Center of University of Science and Technology of China.

摘　　要：Optical data storage(ODS)is a low-cost and high-durability counterpart of traditional electronic or mag-netic storage.As a means of enhancing ODS capacity,the multiple recording layer(MRL)method is more promising than other approaches such as reducing the recording volume and multiplexing technology.However,the architecture of current MRLs is identical to that of recording data into physical layers with rigid space,which leads to either severe interlayer crosstalk or finite recording layers constrained by the short working distances of the objectives.Here,we propose the concept of hybrid-layer ODS,which can record optical information into a physical layer and multiple virtual layers by using high-orthogonality random meta-channels.In the virtual layer,32 images are experimentally reconstructed through holog-raphy,where their holographic phases are encoded into 16 printed images and complementary images in the physical layer,yielding a capacity of 2.5 Tbit cm^(-3).A higher capacity is achievable with more virtual layers,suggesting hybrid-layer ODS as a possible candidate for next-generation ODS.

关 键 词：Optical data storage Metasurfaces High-orthogonality meta-channels Physical layer Virtual layer 

分 类 号：TP333[自动化与计算机技术—计算机系统结构]