Title :
Spatial spread-spectrum multiplexing for holographic data storage using random diffuser and circular spatial filter
Author :
Ito, Terumasa ; Okamoto, Atsushi
Author_Institution :
Graduate Sch. of Inf. Sci. & Technol., Hokkaido Univ., Sapporo, Japan
Abstract :
In this paper, we present a spatial spread-spectrum multiplexing scheme for holographic data storage by the combination of microscopic phase modulation onto an object beam with a random diffuser, and demodulation by phase-conjugate readout. To overcome the overlapping noise a circular spatial filter is inserted in the optical layout.
Keywords :
holographic optical elements; holographic storage; optical filters; optical modulation; optical noise; optical phase conjugation; phase modulation; spatial filters; circular spatial filter; holographic data storage; microscopic phase modulation; optical layout; overlapping noise; phase demodulation; phase-conjugate readout; random diffuser; spatial spread-spectrum multiplexing; Demodulation; Holographic optical components; Holography; Memory; Microscopy; Optical filters; Optical noise; Phase modulation; Spatial filters; Spread spectrum communication;
Conference_Titel :
Lasers and Electro-Optics Europe, 2005. CLEO/Europe. 2005 Conference on
Print_ISBN :
0-7803-8974-3
DOI :
10.1109/CLEOE.2005.1567942
