High Speed Holographic Data Storage at 100 Gbit/in²

Optimization of a thick polyvinyl alcohol-acrylamide photopolymer for data storage using a combination of angular and peristrophic holographic multiplexing

“…The aim of these new techniques is to enable the maximum number of bits͞m 2 to be stored. Anderson et al 7 has managed to store 150 bits͞m 2 and Steckman et al 8 100 bits͞m 2 . For this reason, different methods, such as angular, 4,9 -11 peristrophic, 12,13 or shift multiplexing 8,14,15 are being used to store multiple holograms at the same location.…”

Comparison of peristrophic multiplexing and a combination of angular and peristrophic holographic multiplexing in a thick PVA/acrylamide photopolymer for data storage

“…Anderson et al [7] managed to store 150 bits͞m 2 and Steckman et al [8] 100 bits͞m 2 . For this reason, different methods for multiplexing holograms, such as angular [4,9 -12], peristrophic [1,9,13], or shift-multiplexing [8,14 -15] are being made use of to store multiple holograms at the same location.…”

Medium consumption in holographic memories

“…Instead, we draw on experimental practices. One report by practitioners of angle-polytopic holography cites an average hologram diffraction efficiency of η ¼ 6:8 × 10 −4 [29], whereas another contemporaneous report by blue collinear holographers cites a range of η ¼ 1:3 × 10 −2 to 1:8 × 10 −2 [10], and a later report notes an improvement to η ¼ 2:5 × 10 −3 [11]. No data disclosing a diffraction efficiency for a green collinear experiment is known by these authors.…”