Optical filtering in the collection path of a data storage device

Tom D. Milster; Mark S. Wang; Weiquan Li; Ed Walker

doi:10.1143/JJAP.32.5397

Optical filtering in the collection path of a data storage device

Tom D. Milster, Mark S. Wang, Weiquan Li, Ed Walker

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

8 Scopus citations

Abstract

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.

Original language	English (US)
Pages (from-to)	5397-5401
Number of pages	5
Journal	Japanese Journal of Applied Physics
Volume	32
Issue number	11 S
DOIs	https://doi.org/10.1143/JJAP.32.5397
State	Published - Nov 1993

Keywords

Optical data storage
Optical filtering
Optical transfer function
Superresolution

ASJC Scopus subject areas

General Engineering
General Physics and Astronomy

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10.1143/JJAP.32.5397

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title = "Optical filtering in the collection path of a data storage device",

abstract = "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.",

keywords = "Optical data storage, Optical filtering, Optical transfer function, Superresolution",

author = "Milster, {Tom D.} and Wang, {Mark S.} and Weiquan Li and Ed Walker",

year = "1993",

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language = "English (US)",

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journal = "Japanese Journal of Applied Physics",

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T1 - Optical filtering in the collection path of a data storage device

AU - Milster, Tom D.

AU - Wang, Mark S.

AU - Li, Weiquan

AU - Walker, Ed

PY - 1993/11

Y1 - 1993/11

N2 - 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.

AB - 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.

KW - Optical data storage

KW - Optical filtering

KW - Optical transfer function

KW - Superresolution

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JO - Japanese Journal of Applied Physics

JF - Japanese Journal of Applied Physics

IS - 11 S

ER -

Optical filtering in the collection path of a data storage device

Abstract

Keywords

ASJC Scopus subject areas

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