Method Of Parallel Bit Wise Holographic Data Storage Using A Parallel Light Source

Abstract: The present techniques provide techniques for outputting counter-propagating parallel light waves (30, 34) to pre-record a holographic data disk (10). The parallel light waves (30, 34) are transmitted through a holographic system (16) via a fiber optic bundle (98) including a plurality of polarization-maintaining (PM) optical fibers (76, 78, 80, 96). Each of the PM optical fibers (76, 78, 80, 96) in the fiber optic bundle (98) may have one or more of a different wavelength (102, 104), a different coherence length, and a different polarization orientation to reduce crosstalk in the disk (10). Furthermore, the fiber optic bundle array (112, 114) is rotated to produce interference spots (88, 110) indicative of micro-holograms (68) according to the data track (12) pitch of the holographic disk (10) over which the fiber optic bundle (98) is outputting the light waves (30, 34).

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