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.
© 2010 IEEE
Elena Fernández, Andrés Márquez, Sergi Gallego, Rosa Fuentes, Celia García, and Inmaculada Pascual, "Hybrid Ternary Modulation Applied to Multiplexing Holograms in Photopolymers for Data Page Storage," J. Lightwave Technol. 28, 776-783 (2010)