Analysis of Signal-to-Noise Ratio in Photochromic Super-Resolution Readout

Tsuyoshi TSUJIOKA; Minoru KUME; Masahiro IRIE

doi:10.1007/s10043-997-0655-3

Tsuyoshi TSUJIOKA, Minoru KUME, Masahiro IRIE

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Keywords: optical disk, photochromism, high-density recording, super-resolution, signal-to-noise ratio, shot noise, media noise

JOURNAL FREE ACCESS

1997 Volume 4 Issue 6 Pages 655-659

DOI https://doi.org/10.1007/s10043-997-0655-3

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Abstract

The signal-to-noise ratio (SNR) in the photochromic super-resolution readout of optical disks was theoretically analyzed. The shot noise limited SNR, such as that in magnetooptical disks, was improved only for the short recorded mark. However, the media noise limited SNR, such as that in phase change disks, was greatly improved for both short and long recorded marks.

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