DIFFRACTION ANALYSIS OF OPTICAL-DISK READOUT SIGNAL DETERIORATION CAUSED BY MARK-PROFILE FLUCTUATION

被引：6
|
作者：
HONGUH, Y
机构：
[1] Research and Development Center, Toshiba Corporation, Saiwai-ku, Kawasaki, 210
来源：
APPLIED OPTICS | 1994年 / 33卷 / 05期
关键词：
OPTICAL STORAGE; OPTICAL DISKS; NOISE; DIFFRACTION; VIDEO DISKS;
D O I：
10.1364/AO.33.000857
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
A noise power-spectrum estimation method for mark-profile fluctuation is presented for optical-disk readout signals. The diffraction by marks is modeled by use of the Fraunhofer diffraction theory, and mark-profile fluctuations are taken into account through statistical averaging. The change in the readout signal is assumed to be linear to the change in the mark profile. The calculated results for a high-definition video disk agree well with the experimental results. Fluctuations in the mark-edge position is the major source of noise in the present high-definition video-disk system.
引用
收藏
页码：857 / 862
页数：6
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