Variation of the read-out signal in an optical disk system with a centrally obstructed pupil

Seong Jong Park; Sang Hyun Sim; Chang Sub Chung

doi:10.1117/12.324598

19 August 1998 Variation of the read-out signal in an optical disk system with a centrally obstructed pupil

Seong Jong Park, Sang Hyun Sim, Chang Sub Chung

Proceedings Volume 3573, OPTIKA '98: 5th Congress on Modern Optics; (1998) https://doi.org/10.1117/12.324598
Event: OPTIKA '98: Fifth Congress on Modern Optics, 1998, Budapest, Hungary

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.

Citation Download Citation

Seong Jong Park, Sang Hyun Sim, and Chang Sub Chung "Variation of the read-out signal in an optical disk system with a centrally obstructed pupil", Proc. SPIE 3573, OPTIKA '98: 5th Congress on Modern Optics, (19 August 1998); https://doi.org/10.1117/12.324598

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