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Proceedings Paper

Write strategy investigation of multilevel optical storage in azobenzene liquid crystal polymer film
Author(s): Jiangying Zhang; Hai Ming; Pei Wang; Yunxia Wu; Jiangping Xie; Jian Liu; Qijin Zhang; Guosheng Qi; Peng She; Duanyi Xu
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Paper Abstract

With the increasing demand of optical storage capacity, multi-level (ML) optical storage based on multi-level-amplitude modulation is receiving more and more attention, for it transmits more information ove a fixed bandwidth channel by using the available SNR more efficiently. We proposed an ML optical storage technology in azo LCP film based on polarization angle division. In this paper, the write strategy is developed by a ML write-compensation system that corrects for non-linearities of the data signal. The dynamic transmittance range is extended with the full monotonic range of angle and the varaition of each amplitude level relative to our dynamic range is improved. The experiments of imroved linear and nonlinear 16-level storage in azo LCP are demonstrated. The effects of thickness non-uniformity on linear and nonlinear 16-level storage are discussed.

Paper Details

Date Published: 17 September 2002
PDF: 5 pages
Proc. SPIE 4930, Advanced Optical Storage Technology, (17 September 2002); doi: 10.1117/12.483334
Show Author Affiliations
Jiangying Zhang, Univ. of Science and Technology of China (China)
Hai Ming, Univ. of Science and Technology of China (China)
Pei Wang, Univ. of Science and Technology of China (China)
Yunxia Wu, Univ. of Science and Technology of China (China)
Jiangping Xie, Univ. of Science and Technology of China (China)
Jian Liu, Univ. of Science and Technology of China (China)
Qijin Zhang, Univ. of Science and Technology of China (China)
Guosheng Qi, Tsinghua Univ. (China)
Peng She, Tsinghua Univ. (China)
Duanyi Xu, Tsinghua Univ. (China)


Published in SPIE Proceedings Vol. 4930:
Advanced Optical Storage Technology
Duanyi Xu; Seiya Ogawa, Editor(s)

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