Fast high-density disk storage by multiplexed microholograms

Andreas G.W. Wappelt; Julian Findeisen; Peter Kuemmel; Susanna Orlic; R. Schulz; Hans Joachim Eichler

doi:10.1117/12.308964

22 May 1998 Fast high-density disk storage by multiplexed microholograms

Andreas G.W. Wappelt, Julian Findeisen, Peter Kuemmel, Susanna Orlic, R. Schulz, Hans Joachim Eichler

Proceedings Volume 3490, Optics in Computing '98; (1998) https://doi.org/10.1117/12.308964
Event: Optics in Computing '98, 1998, Bruges, Belgium

Abstract

The new concept of microholographic data storage allows storage capacities of up to 100 GB on a DVD-sized disc 11/. This concept involves bitwise information storage similar to CD and DVD systems. Instead of using pits, the information is coded in form of holographically recorded, microscopic Bragg-reflectors, located in a thin, photosensitive layer (Fig. 1). Each microholographic Bragg-reflector represents one bit, presuming no coding scheme is applied. Microholograms can be stored overlapping in the same volume by using angle multiplexing, wavelength multiplexing or the combination of both. Such storage of multiple information bits in one single position on the disc increases the storage capacity as well as the data transfer rates by the multiplex factor. In contrast to previous holographic storage systems, the storage media are made of cheap and mass-produceable 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.

Citation Download Citation

Andreas G.W. Wappelt, Julian Findeisen, Peter Kuemmel, Susanna Orlic, R. Schulz, and Hans Joachim Eichler "Fast high-density disk storage by multiplexed microholograms", Proc. SPIE 3490, Optics in Computing '98, (22 May 1998); https://doi.org/10.1117/12.308964

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available