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Proceedings Paper

Investigation on rewritable multilevel reflection modulation recording phase-change optical disk
Author(s): Luping Shi; Tow Chong Chong; E. M. Wee; Xiangshui Miao; P. K. Tan; K. G. Lim; Jun Li; Wei Qiang
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Paper Abstract

Multi-level recording on rewritable phase change optical disk was studied using a simulation and experiments. The possibility of using multi-level reflection effects to increase the storage capacity was considered using a computer simulation software called phase change optical disk design. Optical and thermal simulations were carried out on disks with phase change material GeSbTe to study its performance. Using a suitable disk structure, the mark shapes of various sizes that give rise to multi-level reflection effects were written on the disk and examined. In order to solve the problem of the difference in the absorption between the crystalline and amorphous states, a thermal compensation layer of Sb was used. Simulation and experiment results have shown that the effect of the difference can be significantly reduced by the thermal compensation layer.

Paper Details

Date Published: 10 January 2002
PDF: 8 pages
Proc. SPIE 4342, Optical Data Storage 2001, (10 January 2002); doi: 10.1117/12.453411
Show Author Affiliations
Luping Shi, National Univ. of Singapore (Singapore)
Tow Chong Chong, National Univ. of Singapore (Singapore)
E. M. Wee, National Univ. of Singapore (Singapore)
Xiangshui Miao, National Univ. of Singapore (Singapore)
P. K. Tan, National Univ. of Singapore (Singapore)
K. G. Lim, National Univ. of Singapore (Singapore)
Jun Li, National Univ. of Singapore (Singapore)
Wei Qiang, National Univ. of Singapore (Singapore)


Published in SPIE Proceedings Vol. 4342:
Optical Data Storage 2001

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