Coaxial holographic data storage without recording the dc components.
A technique of recovering the data pages from Fourier holograms recorded without the dc components is demonstrated theoretically and experimentally by use of a coaxial holographic storage system. A reconstructed image is obtained by adding a phase-modulated dc component of the signal beam on reading. The bit error rate of the reconstructed image is comparable with that for the hologram recorded with the dc component as well. Since high intensities of the dc components are not recorded in this technique, the dynamic range of the recording media can be saved, which potentially contributes to increasing the number of multiplexed holograms.
Yasuda
Shin
S
Corporate Research Laboratory, Fuji Xerox Company, Ltd., 430 Sakai, Nakai-machi, Ashigarakami-gun, Kanagawa, Japan. Shin.Yasuda@fujixerox.co.jp
Kawano
Katsunori
K
Minabe
Jiro
J
Ogasawara
Yasuhiro
Y
Hayashi
Kazuhiro
K
Haga
Koichi
K
Yoshizawa
Hisae
H
Furuki
Makoto
M