Optical filtering in the collection path of a data storage device

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

Research output: Contribution to journalArticle

7 Citations (Scopus)

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 languageEnglish (US)
Pages (from-to)5397-5401
Number of pages5
JournalJapanese Journal of Applied Physics, Part 1: Regular Papers and Short Notes and Review Papers
Volume32
Issue number11 B
StatePublished - Nov 1993

Fingerprint

data storage
frequency response
Frequency response
low frequencies
carrier to noise ratios
Optical data storage
transfer functions
Transfer functions
narrowband
Signal to noise ratio
signal to noise ratios
apertures
Data storage equipment

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

Cite this

Optical filtering in the collection path of a data storage device. / Milster, Thomas D; Wang, Mark S.; Li, Weiquan; Walker, Ed.

In: Japanese Journal of Applied Physics, Part 1: Regular Papers and Short Notes and Review Papers, Vol. 32, No. 11 B, 11.1993, p. 5397-5401.

Research output: Contribution to journalArticle

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