Data storage on holographic memory card

Author(s):  
Pal Koppa ◽  
Gabor Erdei ◽  
Ferenc Ujhelyi ◽  
Peter Varhegyi ◽  
T. Ujvari ◽  
...  
1998 ◽  
Author(s):  
Kai-Oliver Mueller ◽  
Cornelia Denz ◽  
Torsten Rauch ◽  
Thorsten Heimann ◽  
J. Trumpfheller ◽  
...  

Photonics ◽  
2019 ◽  
Vol 6 (2) ◽  
pp. 70
Author(s):  
Hirayama ◽  
Fujimura ◽  
Umegaki ◽  
Tanaka ◽  
Shimura

Holographic memory is currently attracting attention as a data storage system capable of achieving a data transfer rate of about 105~106105~106 times that of an optical disc such as Blu-ray disc. In conventional holographic memory, data is generally recorded by optical writing using volume holograms. However, a volume hologram has the problem not only that it is required to have high mechanical accuracy of a system and low coefficient of thermal expansion of a recording medium, because reconstruction tolerance is extremely low, but also that duplicating time efficiency is poor because whole data cannot be recorded at once. In this paper we proposed surface holographic memory that achieved a high data transfer rate, stable readout performance, and collective duplication by expressing holograms with fine surface asperity. Furthermore, the theoretical formulas of recording and reconstruction processes in the proposed system were derived and the reconstruction characteristics of the hologram were evaluated by numerical simulation. As a result, the proposed method generated reconstructed image readout with sufficient signal for a single page recording. However, the reconstructed image had noise, which was particular to a surface holographic memory.


2003 ◽  
Author(s):  
Changsheng Xie ◽  
Wei Li ◽  
Xiandeng Pei

2000 ◽  
Author(s):  
Emoeke Loerincz ◽  
Ferenc Ujhelyi ◽  
Attila Sueto ◽  
Gabor Szarvas ◽  
Pal Koppa ◽  
...  

Author(s):  
E. Lorincz ◽  
P. Koppa ◽  
F. Ujhelyi ◽  
P.I. Richter ◽  
G. Szarvas ◽  
...  

2000 ◽  
Author(s):  
Gabor Erdei ◽  
Jozsua Fodor ◽  
Peter Kallo ◽  
Gabor Szarvas ◽  
Ferenc Ujhelyi

2000 ◽  
Vol 28 (Supplement) ◽  
pp. 183-184
Author(s):  
Shogo Yagi ◽  
Tadayuki Imai

2001 ◽  
Vol 40 (Part 1, No. 3B) ◽  
pp. 1841-1845 ◽  
Author(s):  
Katsunori Kawano ◽  
Jiro Minabe ◽  
Tsutomu Ishii

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