Hybrid Ternary Modulation Applied to Multiplexing Holograms in Photopolymers for Data Page Storage

Author

Fernández, Elena ; Marquez, Andres ; Gallego, Sergi ; Fuentes, Rosa ; Garcia, Celia ; Pascual, Inmaculada

Author_Institution

Dep. deoptica, Farmacologia y Anatomia, Univ. de Alicante, Alicante, Spain

Volume

28

Issue

5

fYear

2010

fDate

3/1/2010 12:00:00 AM

Firstpage

776

Lastpage

783

Abstract

Holographic data storage is a new optical technology, which allows an important number of bits to be stored in a recording material. In this paper, holographic data pages were stored in a polyvinyl alcohol/acrylamide (AA) photopolymer layer, using a peristrophic multiplexing method. This material is formed of AA photopolymers, which are considered interesting materials for recording holographic memories. Moreover, a hybrid ternary modulation (HTM) was used to reduce the zero frequency of the Fourier transform of the object. A liquid crystal device was optimized to modify the object beam in order to obtain data pages with the HTM.

Keywords

Fourier transform optics; holographic storage; liquid crystal devices; multiplexing; optical modulation; optical polymers; Fourier transform; alcohol-acrylamide photopolymers; data page storage; holographic memories; hybrid ternary modulation; liquid crystal devices; multiplexing holograms; peristrophic multiplexing method; Liquid crystal devices (LCD); multiplex holography; optical storage, recording materials;

fLanguage

English

Journal_Title

Lightwave Technology, Journal of

Publisher

ieee

ISSN

0733-8724

Type

jour

DOI

10.1109/JLT.2010.2041187

Filename

5398921