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Proceedings Paper

Wavelength multiplexing for microholographic storage disk
Author(s): Hans Joachim Eichler; Peter Kuemmel; Susanna Orlic; Benjamin Schupp; Andreas G.W. Wappelt
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Paper Abstract

An optical disc system has been proposed that stores data holographically in three dimensions as microholograms combining different multiplexing techniques. Such microholograms can be stored overlapping in the same volume by using angle multiplexing, wavelength multiplexing or the combination of both. Storage of several information bits in one single position on the disc increases the data rate so that the total storage capacity could reach more than 100 GBytes on a DVD sized disc. In contrast to photorefractive memory systems, the storage media are made of cheap and mass- producible photopolymer layers instead of expensive crystals. Furthermore, the microholographic storage method can be downward compatible with today's Compact-Disk (CD)- and Digital-Versatile-Disk (DVD)-systems. In this paper we report on wavelength multiplexing of microscopic reflection holograms and on thermal processing of the photopolymer.

Paper Details

Date Published: 23 October 1998
PDF: 10 pages
Proc. SPIE 3401, Optical Data Storage '98, (23 October 1998); doi: 10.1117/12.327921
Show Author Affiliations
Hans Joachim Eichler, Technical Univ. of Berlin (Germany)
Peter Kuemmel, Technical Univ. of Berlin (Germany)
Susanna Orlic, Technical Univ. of Berlin (Germany)
Benjamin Schupp, Technical Univ. of Berlin (United States)
Andreas G.W. Wappelt, Univ. of Stuttgart (Germany)

Published in SPIE Proceedings Vol. 3401:
Optical Data Storage '98
Shigeo R. Kubota; Tomas D. Milster; Paul J. Wehrenberg, Editor(s)

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