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Volume Holographic Optical Storage and Optical Computing


Dr Liangcai Cao

Tsinghua University , Beijing China


3:30 pm Friday, 26 October 2012, EN103 Lecture Theatre (EN Building), Hawthorn.

Volume holographic memory technology has been deeply and widely investigated for over forty years. Due to the successful products of lasers, materials, and optoelectronic elements, only the last one mile is left for this next generation optical memory to the market. There are mainly two special features for this technology. One is the 3-D high density storage due to the Bragg selectivity. The TB capacity of a standard-size disk could be realized based on the novel multiplexing methods. The other is the content addressing ability only for the page-oriented holographic memory. In the volume holographic correlator (VHC) the object signal pattern, instead of the reference beam, is used for the holographic reconstruction. VHC inherently has the characteristics of massive capacity, high-speed, high parallelism, and multichannel processing. It is very promising in applications that need fast, real time, and massive capacity optical computing. Some effective methods will be introduced to improve the computing accuracy of VHC. The experimental system of the volume holographic optical storage and computing in our research group will be demonstrated.

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