摘要
大数据时代对数据存储提出了新的需求,数据的存储安全关乎社会稳定与发展。全息加密光存储具有高存储密度、快读取速度、长保存寿命等特点,为海量数据存储提供了有效的解决方案,是保障数据存储安全的有力手段。聚焦于全息光存储领域,论述了以振幅、相位和偏振等作为调制变量的全息加密光存储的基本原理,介绍了常见的全息加密光存储技术及其性能影响因素,梳理了大量密钥的管理方法,最后总结了各技术特点,并对全息加密光存储的未来发展进行了展望。
Significance The era of big data has presented new demands for mass data storage,and data storage security is critical to social stability and development.Holographic optical storage has not only become a powerful solution for mass data storage because of its high storage density,fast reading speed,and long storage life,but also provides an effective encryption means to ensure data storage security by utilizing the multi-dimensional modulated characteristics of light.Holographic encrypted optical storage has many advantages,including multiple adjustable parameters,a large key space,and a complex storage state in material.By modulating reference or information light,it can prevent unauthorized users from obtaining data and thus can provide a sufficient guarantee for safe data storage.Progress Since double-random phase encoding was first used in optical encryption in the early 1990s,holographic encrypted optical storage has developed rapidly.In general,encrypted optical storage can be divided into four categories.First,as shown in Fig.2,holographic encrypted optical storage can be realized by amplitude modulation.Specific reference and information light encoded with different amplitudes are recorded in the same position of the material.Only the correct amplitude reference light can reconstruct the stored information when reading,whereas the wrong amplitude reference light will reproduce only a portion of the information of multiple data pages and interfere with each other,and thus the correct information will not be obtained.Second,as shown in Fig.3,holographic encrypted optical storage is realized through phase modulation.Specifically,a random phase plate can be placed on the image plane and Fourier plane of the information light to realize phase encryption.Only by mastering the mask in the optical path can the information be accurately reproduced.Here,the same encryption process can be implemented for reference light.In addition,phase modulation can be extended to the Fresnel and fractional Fourier transform doma
作者
林达奎
宋海洋
李枷楠
王琨
林枭
谭小地
Lin Dakui;Song Haiyang;Li Jianan;Wang Kun;Lin Xiao;Tan Xiaodi(College of Photonic and Electronic Engineering,Fujian Normal University,Fuzhou 350117,Fujian,China;Key Laboratory of Opto-Electronic Science and Technology for Medicine of Ministry of Education,Fuzhou 350117,Fujian,China;Fujian Provincial Key Laboratory of Photonics Technology,Fuzhou 350117,Fujian,China;Fujian Provincial Engineering Technology Research Center of Photoelectric Sensing Application,Fuzhou 350117,Fujian,China;Information Photonics Research Center,Fujian Normal University,Fuzhou 350117,Fujian,China)
出处
《中国激光》
EI
CAS
CSCD
北大核心
2023年第18期127-137,共11页
Chinese Journal of Lasers
基金
国家自然科学基金(62105065,U22A2080)
国家重点研发计划(2018YFA0701800)
福建省科技重大专项(2020HZ01012)。
关键词
全息
全息存储
全息加密光存储
光的多维调制
存储安全
holography
holographic storage
holographic encrypted optical storage
multidimensional modulation of light
storage security
