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Proceedings Paper

Variation of the read-out signal in an optical disk system with a centrally obstructed pupil
Author(s): Seong Jong Park; Sang Hyun Sim; Chang Sub Chung
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Paper Abstract

We investigated numerically the variation of the read-out signal in an optical disc system having centrally observed pupil. Considered factors were the radius of central obstruction varied from 0 to 0.9 and the bump shape varied from rectangular bump to conic bump and the spherical aberration varied from 0 to 1 (lambda) . Based on the numerical calculation using scalar diffraction theory, we are able to determine the best central obstruction and the best bump shape and size giving the maximum value of read- out signal. We applied these results to real optical disc system like a commercial digital video disc system. These works can be facilitated the fabrication of real high density optical systems.

Paper Details

Date Published: 19 August 1998
PDF: 3 pages
Proc. SPIE 3573, OPTIKA '98: 5th Congress on Modern Optics, (19 August 1998); doi: 10.1117/12.324598
Show Author Affiliations
Seong Jong Park, Chonnam National Univ. (South Korea)
Sang Hyun Sim, Chongin College (South Korea)
Chang Sub Chung, Chonnam National Univ. (South Korea)

Published in SPIE Proceedings Vol. 3573:
OPTIKA '98: 5th Congress on Modern Optics
Gyorgy Akos; Gabor Lupkovics; Andras Podmaniczky, Editor(s)

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