摘要
微全息存储是按"位"进行信息存储的技术,所存储的每个全息图代表1bit的数据信息量。该技术采用两束相向传播的高斯光束在其焦斑范围内干涉,存储材料将干涉图样记录下来形成微米大小的全息图。结合适当的混合复用技术有望在CD尺寸的存储介质盘内实现1TB的存储容量。微全息存储器的系统结构和传统的光盘系统类似,与现有光盘存储技术和驱动系统的兼容性好。阐述了微全息存储的基本概念和原理,从存储材料、复用技术和实现的存储密度以及微全息存储系统等方面综述了微全息存储技术的发展和目前所取得的成果,指出了其未来的发展趋势。
Micro-holographic data storage is a bit-based volume holographic data storage technology. Localized micro- holograms are recorded at the focus of two counter-propagating beams, and each hologram represents a single bit that is subsequently read out by monitoring the reflectance of a single focused beam. The capacity can be 1 TB in a CD size disc using micro-holographic data storage technology together with hybrid multiplexing methods. It is easy to develop the compatibility of micro-holographic data storage system with the optical disc storage owing to their similar system structure. The basic concept and theoretical model of micro-holographic data storage are firstly illustrated, and then the research progress is reviewed mainly from the aspects including recording media, multiplexing technology and driving system, its future development is also pointed out.
出处
《激光与光电子学进展》
CSCD
北大核心
2012年第10期32-38,共7页
Laser & Optoelectronics Progress
基金
国家自然科学基金(61107002)
北京市人才强教深化计划-中青骨干教师项目(006000543112518)资助课题
关键词
全息
光存储
微全息图
三维光盘
holography
optical data storage
micro-hologram
three-dimensional optical disk
