Abstract

We are studying a form of holographic data storage with phase conjugation, and we compensated for hologram distortion due to shrinkage of photopolymer materials in the holographic medium by controlling the wavefront of the reference beam. When a high NA lens and narrow angle interval of angle multiplexing are employed to obtain a high data recording density, some wavefronts cause interpage crosstalk on the reconstructed image. We tried to determine the moving range of actuators in a deformable mirror for controlling the wavefront. As a result, we found that the distortion in the hologram could be compensated while avoiding interpage crosstalk and that the bit error rates of the reproduced data could be decreased. We also found that the optimized wavefront could compensate for distortions in several neighboring data pages. This method can ensure a high data recording density in holographic data storage.

© 2011 Optical Society of America

Optical compensation of distorted data image caused by interference fringe distortion in holographic data storage

Tetsuhiko Muroi, Nobuhiro Kinoshita, Norihiko Ishii, Koji Kamijo, and Naoki Shimidzu
Appl. Opt. 48(19) 3681-3690 (2009)

Half-data-page insertion method for increasing recording density in angular multiplexing holographic memory

Nobuhiro Kinoshita, Tetsuhiko Muroi, Norihiko Ishii, Koji Kamijo, Hiroshi Kikuchi, Naoki Shimidzu, and Osamu Matoba
Appl. Opt. 50(16) 2361-2369 (2011)

Shift multiplexing with a spherical wave in holographic data storage based on a computer-generated hologram

Teruyoshi Nobukawa and Takanori Nomura
Appl. Opt. 56(13) F31-F36 (2017)

Multiplexed phase-conjugate holographic data storage with a buffer hologram

Geoffrey W. Burr and Inmaculada Leyva
Opt. Lett. 25(7) 499-501 (2000)

Density implications of shift compensation postprocessing in holographic storage systems

Laure Menetrier and Geoffrey W. Burr
Appl. Opt. 42(5) 845-860 (2003)