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Proceedings Paper

Higher capacity optical disk subsystem using a sampled servo format
Author(s): Shigetaro Iwatsu; Yasuhide Nishida; Toru Takeda
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Paper Abstract

A narrower track pitch for magneto-optical recording is evaluated by simulation and experiment for a higher-capacity disk subsystem. This experimental disk subsystem uses a sampled servo format with currently available optical components. The simulation estimates the recording track pitch limit for conventional laser wavelengths of 780 nm, and the effects of narrower track pitch recording is examined in actual sampled servo format disks. The reproduced signals are evaluated from the jitter in the time domain, and erase characteristics are evaluated from the decrease in signal amplitude. A track pitch of 1.0 micrometers is shown feasible by the experimental results if the recording pulse waveform is optimized and a pulsed erase method is used to reduce cross-erase.

Paper Details

Date Published: 13 August 1992
PDF: 6 pages
Proc. SPIE 1663, Optical Data Storage, (13 August 1992); doi: 10.1117/12.137565
Show Author Affiliations
Shigetaro Iwatsu, NTT Interdisciplinary Research Labs. (Japan)
Yasuhide Nishida, NTT Interdisciplinary Research Labs. (Japan)
Toru Takeda, NTT Interdisciplinary Research Labs. (Japan)

Published in SPIE Proceedings Vol. 1663:
Optical Data Storage
Donald B. Carlin; David B. Kay; Alfred A. Franken, Editor(s)

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