Expand this Topic clickable element to expand a topic
Skip to content
Optica Publishing Group

Improvement to holographic digital data-storage systems with random and pseudorandom phase masks

Not Accessible

Your library or personal account may give you access

Abstract

Various effects associated with using a random phase mask in holographic data storage are analyzed. It is shown that the nonlinear nature of recording a phase hologram coupled with the highly nonuniform profile of the object beam is the major source of interpixel cross talk. It is also shown that, although the nonlinear effects are reduced by an increase in the reference-to-object beam ratio, the scattering noise is increased. Thus an optimal beam ratio must be used to maximize the signal-to-noise ratio. It is demonstrated as well that the interpixel interference noise can be suppressed effectively by use of a multilevel pseudorandom phase mask, which also significantly reduces the nonlinear noise. These findings are supported by experimental results that show the signal-to-noise ratio and efficiency are improved significantly by use of a six-level pseudorandom phase mask.

© 1997 Optical Society of America

Full Article  |  PDF Article
More Like This
Effects of multilevel phase masks on interpixel cross talk in digital holographic storage

M.-P. Bernal, G. W. Burr, H. Coufal, R. K. Grygier, J. A. Hoffnagle, C. M. Jefferson, E. Oesterschulze, R. M. Shelby, G. T. Sincerbox, and M. Quintanilla
Appl. Opt. 36(14) 3107-3115 (1997)

Experimental study of the effects of a six-level phase mask on a digital holographic storage system

María-P. Bernal, Geoffrey W. Burr, Hans Coufal, John A. Hoffnagle, C. Michael Jefferson, Roger M. Macfarlane, Robert M. Shelby, and Manuel Quintanilla
Appl. Opt. 37(11) 2094-2101 (1998)

Improving holographic data storage by use of an optimized phase mask

Jianwen Yang, Luís M. Bernardo, and You-Seok Bae
Appl. Opt. 38(26) 5641-5645 (1999)

Cited By

You do not have subscription access to this journal. Cited by links are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Figures (12)

You do not have subscription access to this journal. Figure files are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Equations (26)

You do not have subscription access to this journal. Equations are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Select as filters


Select Topics Cancel
© Copyright 2024 | Optica Publishing Group. All Rights Reserved