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Proceedings Paper

Read/write demonstrator of rewritable holographic memory card system
Author(s): Emoeke Loerincz; Ferenc Ujhelyi; Pal Koppa; A. Kerekes; Gabor Szarvas; Gabor Erdei; Jozsua Fodor; Sz. Mike; Attila Sueto; Peter Varhegyi; P. S. Ramanujam; Soeren Hvilsted
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Paper Abstract

We present the improved demonstrator of our rewritable holographic memory card system. High density optical storage is realized in a non-commercial optical set-up. Fourier transformed recording is used in a polarization holographic arrangement realizing reading and writing from the same side of the data carrier which is a modified plastic card. Holograms containing binary information of 300 x 220 bits are as small as 0.0484 square mm. The storage layer is amorphous polyester providing repeated writing and erasure cycles and thousandfold readouts without loss of information. Alternate read only system providing non-volatile storage can be realized using 635 nm laser diode.

Paper Details

Date Published: 10 January 2002
PDF: 8 pages
Proc. SPIE 4342, Optical Data Storage 2001, (10 January 2002); doi: 10.1117/12.453409
Show Author Affiliations
Emoeke Loerincz, Budapest Univ. of Technology and Economics (Hungary)
Ferenc Ujhelyi, Budapest Univ. of Technology and Economics (Hungary)
Pal Koppa, Budapest Univ. of Technology and Economics (Hungary)
A. Kerekes, Budapest Univ. of Technology and Economics (Hungary)
Gabor Szarvas, Optilink Hungary, Ltd. (Hungary)
Gabor Erdei, Optilink Hungary, Ltd. (Hungary)
Jozsua Fodor, Optilink Hungary, Ltd. (France)
Sz. Mike, Optilink Hungary, Ltd. (Hungary)
Attila Sueto, Optilink Hungary, Ltd. (Hungary)
Peter Varhegyi, Optilink Hungary, Ltd. (Hungary)
P. S. Ramanujam, Risoe National Lab. (Denmark)
Soeren Hvilsted, Technical Univ. of Denmark (Denmark)

Published in SPIE Proceedings Vol. 4342:
Optical Data Storage 2001
Terril Hurst; Seiji Kobayashi, Editor(s)

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