Edge detection in phase-change optical data storage

Chubing Peng; M. Mansuripur; W. M. Kim; S. G. Kim

doi:10.1063/1.119350

Edge detection in phase-change optical data storage

Chubing Peng, M. Mansuripur, W. M. Kim, S. G. Kim

Research output: Contribution to journal › Article › peer-review

8 Scopus citations

Abstract

A direct mark edge detection scheme for readout in phase-change optical disk systems is described. The medium for edge detetection must be optimized to have a 90° phase difference between the amorphous mark and the crystalline space. Theoretical analysis and numerical simulation have shown that the readout signal using mark edge detection is as good as that using conventional detection of reflectivity for long marks and superior for short marks. Noise level at the output of differential edge detection is lower than that at the output of conventional detection. We also show experimental results that confirm these predictions.

Original language	English (US)
Pages (from-to)	2088-2090
Number of pages	3
Journal	Applied Physics Letters
Volume	71
Issue number	15
DOIs	https://doi.org/10.1063/1.119350
State	Published - Oct 13 1997

ASJC Scopus subject areas

Physics and Astronomy (miscellaneous)

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10.1063/1.119350

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abstract = "A direct mark edge detection scheme for readout in phase-change optical disk systems is described. The medium for edge detetection must be optimized to have a 90° phase difference between the amorphous mark and the crystalline space. Theoretical analysis and numerical simulation have shown that the readout signal using mark edge detection is as good as that using conventional detection of reflectivity for long marks and superior for short marks. Noise level at the output of differential edge detection is lower than that at the output of conventional detection. We also show experimental results that confirm these predictions.",

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AU - Kim, S. G.

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Y1 - 1997/10/13

N2 - A direct mark edge detection scheme for readout in phase-change optical disk systems is described. The medium for edge detetection must be optimized to have a 90° phase difference between the amorphous mark and the crystalline space. Theoretical analysis and numerical simulation have shown that the readout signal using mark edge detection is as good as that using conventional detection of reflectivity for long marks and superior for short marks. Noise level at the output of differential edge detection is lower than that at the output of conventional detection. We also show experimental results that confirm these predictions.

AB - A direct mark edge detection scheme for readout in phase-change optical disk systems is described. The medium for edge detetection must be optimized to have a 90° phase difference between the amorphous mark and the crystalline space. Theoretical analysis and numerical simulation have shown that the readout signal using mark edge detection is as good as that using conventional detection of reflectivity for long marks and superior for short marks. Noise level at the output of differential edge detection is lower than that at the output of conventional detection. We also show experimental results that confirm these predictions.

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Edge detection in phase-change optical data storage

Abstract

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