Method and apparatus for azimuthal multiplexing of holograms

Details Method and apparatus for azimuthal multiplexing of holograms Method and apparatus for azimuthal multiplexing of holograms

1994-12-21

1997-06-10

Dzierzynski, Paul M.

Optical: systems and elements

Holographic system or element

Using modulated or plural reference beams

359 10, 359 21, 359 15, 369103, G02B 532, G03H 110, G03H 112, G11B 700

Patent

active

056381930

ABSTRACT:
A holographic storage system and method are provided in which a light source (12) is used to generate a coherent light beam which is split into a reference beam (18) and an object beam (20). The reference beam (18) is directed to the holographic storage medium (22) through use of a reference beam multiplexer (24). The object beam is encoded with a pattern encoder (34) and directed to the holographic storage medium (26). During read out, the object beam is reconstructed and detected by an optical detector (40).

REFERENCES:
patent: 3848096 (1974-11-01), Marko
patent: 4988153 (1991-01-01), Paek
patent: 5477347 (1995-12-01), Redfield et al.
patent: 5483365 (1996-01-01), Pu et al.
patent: 5510912 (1996-04-01), Blaum et al.
K. Curtis, A. Pu, and D. Psaltis, "Method for Holographic Storage Using Peristrophic Multiplexing,"Optics Letters, vol. 19, No. 13, Copyright 1994, pp. 993-994.

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