高密度信息存储的偏光全息理论及关键技术研究

项目名称： 高密度信息存储的偏光全息理论及关键技术研究

项目编号： No.61475019

项目类型： 面上项目

立项/批准年度： 2015

项目学科： 无线电电子学、电信技术

项目作者： 谭小地

作者单位： 福建师范大学

项目金额： 80万元

中文摘要： 大数据时代迫切需要对海量数据进行长期保存。目前，主流的数据保存方法依赖磁记录技术，这种技术不仅寿命有限，而且数据存储密度已经趋近于其理论技术的极限。光存储具有长期保存的特点，可是现有光盘存储的记录密度同样已经趋近于其理论技术的极限。已经商业化的存储技术都难以满足海量数据存储的高密度需求。全息光存储被誉为高密度的光存储方式，但是目前实际达到的记录密度与理论值还有很大差距。本项目提出的偏光全息存储技术可以在现有的三维全息存储方式中再增加一维偏振的信息变量，提升为四维光信息存储，有效解决高密度存储问题。偏光全息理论研究是近年才开始的，本项目拟从完善偏光全息理论入手，揭示偏振光在全息记录和再现过程中的物理机制，利用偏振光的调制来提高全息存储密度，力争使偏光全息存储技术满足大数据时代海量数据长期保存的需求。

中文关键词： 信息光学；光信息处理；全息术；偏振光学

英文摘要： In the big data era, it is very urgent that the needs of storing mass data with a long time. At present, the main methods of data storage are magnetic recording technology. These methods are limited not only of their life time, but also the density of data storage, which approaches to the theoretical limitation of the technology. Conventional optical storage disc, like DVD and BD, has the characteristics of long term preservation, but the recording density is also near to the limitation of two dimensional surface of the disc medium. The existed commercialized storage technologies are difficult to meet the demands for high density data storage with a long life time. The holographic storage was known as optical storage of high density, but, there is still a big gap between actual recording density and theoretical value. This project proposed the polarization holography optical storage technology, the polarization information can be used as a dimensional parameter, and add it into the existing 3D holographic data storage system. Therefore, it becomes a four dimensional data storage system, and effectively solves the problem of high density storage. The study of the polarization holographic theory was just started in recent years. The project intends to improve of its theory, revealing the physical mechanism of polarized light in holographic recording and reconstructing process, to increase the density of holographic data storage system using polarized light modulation, and strive to meet the needs of the age of big data with high recording density and a long life time.

英文关键词： Information Optics;Optical Information Process;Holography;Polarization Optics