Optical noise reduction by reconstructing positive and negative images from Fourier holograms in coaxial holographic storage systems.
A technique for reconstructing positive and negative images from an identical intensity-modulated hologram is demonstrated theoretically and experimentally by use of a coaxial holographic storage system. Negative images are obtained by adding a phase-modulated dc component of signal beam on reading. By comparing positive and negative images, the bit error rate (BER) is improved by two orders of magnitude. This technique can reduce optical noise of reconstructed images to attain low BERs.
Yasuda
Shin
S
Corporate Research Laboratory, Fuji Xerox Company, Japan. Shin.Yasuda@fujixerox.co.jp
Ogasawara
Yasuhiro
Y
Minabe
Jiro
J
Kawano
Katsunori
K
Furuki
Makoto
M
Hayashi
Kazuhiro
K
Haga
Koichi
K
Yoshizawa
Hisae
H