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Proceedings Paper

Influence of bump shape on read out signal in optical disc
Author(s): Harold H. Hopkins; Chang Sub Chung
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Paper Abstract

The scalar diffraction theory of read-out signal in optical disc is described, and numerical results are given. The strength of this signal depends on the shape of bump(pit) which shows more or less rounding of edge because of the photoresist process. It is shown that the ideal shape is the retangular form, with no rounding of edge. This form is not achievable in practice, but the results show that very satisfactory values of the read-out signal can nevertheless be achieved in the presence of the moderate amounts of rounding.

Paper Details

Date Published: 5 August 1994
PDF: 4 pages
Proc. SPIE 2321, Second International Conference on Optoelectronic Science and Engineering '94, (5 August 1994); doi: 10.1117/12.182087
Show Author Affiliations
Harold H. Hopkins, Univ. of Reading (United Kingdom)
Chang Sub Chung, Chonnam National Univ. (South Korea)

Published in SPIE Proceedings Vol. 2321:
Second International Conference on Optoelectronic Science and Engineering '94
Wang Da-Heng; Anna Consortini; James B. Breckinridge, Editor(s)

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