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Appl. Sci. 2014, 4(2), 158-170; doi:10.3390/app4020158

Shift Multiplex Recording of Four-Valued Phase Data Pages by Volume Retardagraphy

1
Graduate School of Engineering, Utsunomiya University, 7-1-2 Yoto, Utsunomiya, Tochigi 321-8585, Japan
2
Center for Optical Research and Education (CORE), Utsunomiya University, 7-1-2 Yoto, Utsunomiya, Tochigi 321-8585, Japan
3
Electronics and Photonics Research Institute, National Institute of Advanced Industrial Science and Technology (AIST), Tsukuba Central 5, 1-1-1 Higashi, Tsukuba, Ibaraki 305-5676, Japan
*
Author to whom correspondence should be addressed.
Received: 8 December 2013 / Revised: 12 March 2014 / Accepted: 20 March 2014 / Published: 8 April 2014
(This article belongs to the Special Issue Optical Memory)
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Abstract

In this paper, shift multiplex recording of phase data pages on a volume polarization-sensitive medium by retardagraphy is demonstrated. The origin of shift selectivity in volume retardagraphy is explained. In the experiment, four-valued phase data pages are used. Then, a coding method is proposed to correct a reconstructed phase pattern. The recorded phase data pages are reconstructed using the feature of the coding method. By comparing the reconstructed phase data pages with recording phase data pages, symbol error rates of less than 11% are achieved. From the experimental result, it is verified that volume retardagraphy is applicable to optical memory. View Full-Text
Keywords: retardagraphy; polarization holography; volume holographic memory; optical data storage; phase data page; polarization-sensitive material retardagraphy; polarization holography; volume holographic memory; optical data storage; phase data page; polarization-sensitive material
This is an open access article distributed under the Creative Commons Attribution License (CC BY 3.0).

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MDPI and ACS Style

Barada, D.; Sekiguchi, H.; Fukuda, T.; Kawata, S.; Yatagai, T. Shift Multiplex Recording of Four-Valued Phase Data Pages by Volume Retardagraphy. Appl. Sci. 2014, 4, 158-170.

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