OPTICAL FILTERING IN THE COLLECTION PATH OF A DATA-STORAGE DEVICE

被引：6

作者：

MILSTER, TD ^{[1
]}

WANG, MS ^{[1
]}

LI, WQ ^{[1
]}

WALKER, E ^{[1
]}

机构：

[1] SHANGHAI INST MET,SHANGHAI 200050,PEOPLES R CHINA

来源：

JAPANESE JOURNAL OF APPLIED PHYSICS PART 1-REGULAR PAPERS SHORT NOTES & REVIEW PAPERS | 1993年 / 32卷 / 11B期

关键词：

SUPERRESOLUTION; OPTICAL DATA STORAGE; OPTICAL FILTERING; OPTICAL TRANSFER FUNCTION;

D O I：

10.1143/JJAP.32.5397

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

The effects of placing a shading band in the collection path of a magneto-optical data storage device are presented. The shading band consists of an opaque region in the center of the collection aperture, which reduces the low-frequency response of the system without affecting the high-frequency response. This partially equalizes the system transfer function. Dynamic measurements indicate that the noise is also reduced in the low-frequency region, thus not significantly affecting the narrow-band carrier-to-noise ratio (CNR). The integrated signal-to-noise ratio (SNR) shows slight improvement in the high-frequency region.

引用

页码：5397 / 5401

页数：5

共 5 条

[1]

FUKUMOTO A, 1991, P SOC PHOTO-OPT INS, V1499, P216, DOI 10.1117/12.45902

[2]

Jacquinot P., 1964, PROGRESS OPTICS, V3, P31

[3]

MILSTER TD, 1992, APPL OPTICS, V29, P6272

[4] SUPERRESOLUTION IN CONFOCAL SCANNING MICROSCOPY [J].

WILSON, T ;

HEWLETT, SJ .

OPTICS LETTERS, 1991, 16 (14) :1062-1064

[5] HIGH-DENSITY OPTICAL-RECORDING BY SUPERRESOLUTION [J].

YAMANAKA, Y ;

HIROSE, Y ;

KUBOTA, K .

JAPANESE JOURNAL OF APPLIED PHYSICS PART 1-REGULAR PAPERS SHORT NOTES & REVIEW PAPERS, 1989, 28 :197-200

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