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  4. Inter-pixel grating noise in holographic memories
 
conference paper

Inter-pixel grating noise in holographic memories

Panotopoulos, G.
•
Psaltis, D.  
•
An, X.
1998
Advanced Optical Memories And Interfaces To Computer Storage
Conference on Advanced Optical Memories and Interfaces to Computer Storage

We have experimentally discovered that the Signal-to-Noise Ratio (SNR) of holograms initially remains constant as the number of holograms stored increases and drops significantly only after a large number of holograms are recorded. This suggests that in a large-scale memory, the limiting noise source is not crosstalk between holograms but holographic noise due to the prolonged exposure of the signal beam. We have carried out experiments to investigate the formation and influence of the inter-pixel grating noise and shown that it is a very important form of holographic noise. We also proposed and demonstrated the use of random-phase modulation in the signal to suppress the inter-pixel grating noise.

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Type
conference paper
DOI
10.1117/12.330422
Web of Science ID

WOS:000078029300026

Author(s)
Panotopoulos, G.
Psaltis, D.  
An, X.
Date Issued

1998

Publisher

Spie-Int Soc Optical Engineering, Po Box 10, Bellingham, Wa 98227-0010 Usa

Published in
Advanced Optical Memories And Interfaces To Computer Storage
Series title/Series vol.

Proceedings Of The Society Of Photo-Optical Instrumentation Engineers (Spie); 3468

Start page

226

End page

237

Subjects

holographic memory

•

LiNbO3 : Fe

•

inter-pixel grating noise

•

random-phase modulation

Editorial or Peer reviewed

REVIEWED

Written at

OTHER

EPFL units
LO  
Event nameEvent placeEvent date
Conference on Advanced Optical Memories and Interfaces to Computer Storage

SAN DIEGO, CA

Jul 22-24, 1998

Available on Infoscience
November 25, 2010
Use this identifier to reference this record
https://infoscience.epfl.ch/handle/20.500.14299/58845
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