Holographic data storage technology

Abstract

We present an overview of our research effort on volume holographic digital data storage. Innovations, developments, and new insights gained in the design and operation of working storage platforms, novel optical components and techniques, data coding and signal processing algorithms, systems tradeoffs, materials testing and tradeoffs, and photon-gated storage materials are summarized.

Investigation of the sensitivity to humidity of an acrylamide-based photopolymer containing N-phenylglycine as a photoinitiator

“…Photopolymer materials can be used in holographic data storage [1][2][3][4][5][6][7], diffractive and refractive optical elements [8,9], solar concentrators [10,11], holographic interferometry [12][13][14][15][16] and holographic sensors [17][18][19]. Acrylamide-based photopolymers are widely covered in the literature.…”

Control Methods in Data-Storage Systems

“…Thus HDS has been considered suitable for archival systems and massive multimedia data storage. For details on HDS systems, the reader is referred to [11], [190], [191], and the references therein. In [192], fundamental issues underlying HDS, such as grating formation, recording and readout of thick and thin holograms, multiplexing techniques, SNR considerations, and readout techniques suitable for conventional, phase-conjugate, and associative search data retrieval, including a discussion on electronic implementations for control, signal encoding, and recovery, are extensively reviewed.…”

“…Angle, wavelength, and phase code methods have been introduced for multiplexing [190], [191], [194]. To use volume holography as a storage technology, the digital data to be stored must be imprinted onto the object beam for recording and then retrieved from the reconstructed object beam during readout.…”

Light-Sensitive Media-Composites for Recording Volume Holograms Based on Porous Glass and Polymer

“…Attempts to implement the principle using other compositions was less successful. However, experts consider the principle today among the most promising in creation of volume recording materials for holographic memory (Ashley et al, 2000;Shelby, 2002;Liu at al., 2010).…”