Study on large capacity optical data storage

大容量光数据存储研究

• 批准号: 20560336
• 负责人: YAMAMOTO Manabu
• 金额: $ 3万
• 依托单位: Tokyo University of Science
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (C)
• 财政年份: 2008
• 资助国家: 日本
• 起止时间: 2008 至 2010
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-20560336/
• 关键词: 記憶; 記録; ホログラム; メモリ; 記録システム; 再生専用; 多重記録

To achieve the holographics memory of the playback-only type, the phase multivalued record method to use the pit pattern with different depth was examined. Because the multiplicity had not improved in a past ROM method, the method to record multivalued newly in the direction of the pit depth was examined. It was clarified to be able to make eight steps for the direction of depth by using the electron beam cutting technology about the sample making. The phase diversity and the homodyne detection were simulated about the reproduction simulation. The phase was confirmed and it was confirmed to be able to reproduce the separation by eight values. The accuracy of the experiment and the simulation will be improved in addition in the future, and the improvement of storage capacity is aimed at.

为了实现纯播放型全息存储，研究了采用不同深度凹坑模式的相位多值记录方法。针对以往ROM方法的多重性没有得到改善的问题，研究了在坑深方向上新记录多值的方法。阐明了利用电子束切割技术在样品制作中可实现深度方向的八个步骤。在再现仿真的基础上，对系统的相位分集和稳态检测进行了仿真。确认了相，并确认能够通过8个值再现分离。今后还将进一步提高实验和仿真的准确性，并以提高存储容量为目标。

项目成果

Recording Reproduction Simulation of Holographic Memory Using Three-dimensional Beam Propagation Method

采用三维光束传播法的全息存储器记录再现模拟

• 发表时间: 2010
• 作者: T.Ohori;Y.Ouchi;M.Yamamoto
• 通讯作者: M.Yamamoto

Evaluation Method of an Influence of Wavefront Aberration on Signal Quality in Holographic Memory

全息存储器波前像差对信号质量影响的评估方法

• 发表时间: 2010
• 作者: A.Nakajima;K.Akieda;T.Ohori;K.Katakura;M.Yamamoto
• 通讯作者: M.Yamamoto

計算機合成ホログラムにおける位相コード多重方式の検討

计算机全息图相位码复用方法研究

• 发表时间: 2008
• 作者: 金安;大内;山本
• 通讯作者: 山本

Signal quality Improvement of Holographic Data Storage by Adaptive two-dimensional Filter

自适应二维滤波器提高全息数据存储的信号质量

• 发表时间: 2010
• 期刊: Optical Data Storage
• 作者: Y.Kondo;et al
• 通讯作者: et al

Analysis of Diffraction Characteristics of Photopolymers by Using Beam Propagation Method

光束传播法分析光聚合物的衍射特性

• 发表时间: 2009
• 期刊: Japanese Journal of Applied Phisics 48
• 作者: S.Yoshida;M.Yamamoto
• 通讯作者: M.Yamamoto