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Proceedings Paper

Present and future of 3.5-in. magneto-optical disk
Author(s): Seiya Ogawa; Keiji Shono
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Paper Abstract

The current 3.5' MO disk has a capacity of 640 MB. To increase capacity/recording density, we investigated magnetically induced super resolution. Double mask rear aperture detection is described, resulting in two to four times increase in capacity. In future we want to achieve 15 GB or 20 Gb/in2 five years later from now and 150 GB ten years later. Various technologies to achieve them are surveyed. To increase performance we proposed multi-beam optical head. Laser-assisted magnetic recording will be a breakthrough to the density limitation of magnetic recording caused by thermal fluctuation.

Paper Details

Date Published: 10 August 1998
PDF: 8 pages
Proc. SPIE 3562, Optical Storage Technology, (10 August 1998); doi: 10.1117/12.318500
Show Author Affiliations
Seiya Ogawa, Fujitsu Labs. Ltd. (Japan)
Keiji Shono, Fujitsu Labs. Ltd. (Japan)


Published in SPIE Proceedings Vol. 3562:
Optical Storage Technology
Duanyi Xu; Seiya Ogawa, Editor(s)

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