Reliability of content-addressable data search in a defocused volume holographic data storage system
Applied Optics, Vol. 49, Issue 5, pp. 781-789 (2010)
http://dx.doi.org/10.1364/AO.49.000781
Enhanced HTML 
Acrobat PDF (1074 KB)
Abstract
We investigate for suitable methods that enable reliable content-addressable data search in a defocused volume holographic data storage system. Two techniques have been introduced and are shown to overcome the shortcomings of the known methods used to perform content searching in defocused holographic recording geometry. In effect, we remove the deterministic errors that result because of the presence of nonmatching database records, producing almost the same correlation scores as the true targeted correlation scores. Such deterministic errors give rise to erroneous search outcomes and reduce the speed advantage of the parallel holographic data search. We present experimental results and discuss the improvements offered by the two introduced methods in terms of storage density and measured correlation scores. Both the methods of modified-balanced and 25% sparse modulation coded data pages are found to produce good results, negating the undesired correlation characteristics.
© 2010 Optical Society of America
OCIS Codes
(090.4220) Holography : Multiplex holography
(200.4540) Optics in computing : Optical content addressable memory processors
(210.2860) Optical data storage : Holographic and volume memories
ToC Category:
Optical Data Storage
History
Original Manuscript: August 24, 2009
Revised Manuscript: December 14, 2009
Manuscript Accepted: January 7, 2010
Published: February 2, 2010
Citation
Bhargab Das, Joby Joseph, and Kehar Singh, "Reliability of content-addressable data search in a defocused volume holographic data storage system," Appl. Opt. 49, 781-789 (2010)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-49-5-781
You do not have subscription access to this journal. Citation lists with outbound citation links are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.
Contact your librarian or system administrator
or
Log in to access OSA Member Subscription
You do not have subscription access to this journal. Cited by links are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.
Contact your librarian or system administrator
or
Log in to access OSA Member Subscription
You do not have subscription access to this journal. Figure files are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.
Contact your librarian or system administrator
or
Log in to access OSA Member Subscription
You do not have subscription access to this journal. Article level metrics are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.
Contact your librarian or system administrator
or
Log in to access OSA Member Subscription
Related Journal Articles 
- Characterization of phenanthrenequinone-doped poly(methyl methacrylate) for holographic memory (OL)
- Multilayer volume holographic optical memory (OL)
- Holographic recording and retrieval of polarized light by use of polyester containing cyanoazobenzene units in the side chain (OL)
- Content-addressable data storage by use of volume holograms (AO)
- Improved data search by zero-order (dc) peak filtering in a defocused volume holographic content-addressable memory (AO)
Related Conference Papers
- Improving Content-Addressability in a Holographic Database Using New Input Modulation Schemes
- Accuracy and scalability in holographic content-addressable storage
- Three dimensional analysis of holographic shift multiplexing in thin volumetric media
- Volume Holographic Recording with Spatial Spread Spectrum Multiplexing Technique
- High Density Recording of Collinear Holographic Data Storage
« Previous Article | Next Article »
OSA is a member of 