Optical data storage using orthogonal wavelength multiplexed volume holograms.
نویسندگان
چکیده
We propose a volume holographic data storage scheme that employs counterpropagating reference and image beams and wavelength multiplexing for page differentation. This method is compared with that based on angular multiplexing. A reduction in holographic cross talk is predicted. Further cross-talk reduction that is due to sidelobe suppression is observed in experiments by using photorefractive crystals and the proposed orthogonal data storage.
منابع مشابه
Interpage and interpixel cross talk in orthogonal (wavelength multiplexed) holograms.
The problem of cross talk in image-bearing wavelength-multiplexed holograms was raised recently [A. Yariv, in Digest of Conference on Nonlinear Optics (Optical Society of America, Washington, D.C., 1992), postdeadline paper E-2]. In the limit of a large aperture (lens, crystal) it is shown that the cross talk is independent of the information content. The reduction of the hologram volume is sho...
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عنوان ژورنال:
- Optics letters
دوره 17 20 شماره
صفحات -
تاریخ انتشار 1992