Title :
Volume holographic storage demonstrator based on phase-coded multiplexing
Author :
Denz, Cornelia ; Müller, Kai-Oliver ; Heimann, Thorsten ; Tschudi, Theo
Author_Institution :
Inst. of Appl. Phys., Tech. Univ. Darmstadt, Germany
Abstract :
We present the design and realization of a compact volume holographic memory based on phase-coded multiplexing. Due to the use of nonmechanical reference beam changes in this multiplexing technique, rapid access of the stored data pages is achieved. Our system can reach a maximum storage capacity up to 480 data pages with a resolution of 640×480 pixels in a single interaction region of a photorefractive LiNbO3 crystal. We present the implementation of the system and first experimental results of both, high-resolution analog image storage and digital data storage. The storage of 180 data pages is demonstrated as well as the application of the system to real-time optical image processing
Keywords :
holographic storage; lithium compounds; multiplexing; phase coding; photorefractive materials; 480 pixel; 640 pixel; LiNbO3; analog image storage; data page; digital data storage; nonmechanical reference beam; optical storage; phase coded multiplexing; photorefractive LiNbO3 crystal; real-time optical image processing; volume holographic memory; High speed optical techniques; Holographic optical components; Holography; Image processing; Image storage; Memory; OFDM; Photorefractive materials; Real time systems; Storage automation;
Journal_Title :
Selected Topics in Quantum Electronics, IEEE Journal of
DOI :
10.1109/2944.735769
