title: Half-data-page insertion method for increasing recording density in angular multiplexing holographic memory.
abstract: We have developed a method to use a half-size data page between two full-size data pages to increase the recording density in angular multiplexing holographic memory up to 1.5× as much as the conventional angular multiplexing sequence. In our recording sequence, the full- and half-size data pages are alternately multiplexed. This is because each plane wave from various points in a data page has different angular selectivity. A half-size data page has higher angular selectivity than a full-size data page. The required angular intervals were estimated by numerical simulation taking holographic medium tilt into account. Also, an angular multiplexing experiment using the half-data-page insertion method resulted in a low bit error rate of the order of 10(-3), which is sufficient for practical use.
authors.affiliation: Science and Technology Research Laboratories, Japan Broadcasting Corporation, Tokyo, Japan. kinoshita.n‐ee@nhk.or.jp
authors.forename: Nobuhiro
authors.initials: N
authors.lastname: Kinoshita
authors.forename: Tetsuhiko
authors.initials: T
authors.lastname: Muroi
authors.forename: Norihiko
authors.initials: N
authors.lastname: Ishii
authors.forename: Koji
authors.initials: K
authors.lastname: Kamijo
authors.forename: Hiroshi
authors.initials: H
authors.lastname: Kikuchi
authors.forename: Naoki
authors.initials: N
authors.lastname: Shimidzu
authors.forename: Osamu
authors.initials: O
authors.lastname: Matoba