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Applied Optics

Applied Optics


  • Vol. 39, Iss. 34 — Dec. 1, 2000
  • pp: 6436–6440

Vector diffraction analysis of optical disk readout

Xianfu Cheng, Huibo Jia, and Duanyi Xu  »View Author Affiliations

Applied Optics, Vol. 39, Issue 34, pp. 6436-6440 (2000)

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The optical disk readout signals from ROM disks are presented by use of a rigorous three-dimensional vector diffraction method. The optical disk is modeled as a crossed metal grating without restriction on the form of the information marks, and the permittivity of the metal is taken into account. The diffracted field from the disk is obtained by means of decomposing the focused incident beam into a spectrum of plane waves and then calculating the diffracted plane waves for each respective incident component. The readout signal is obtained by integration of the energy-flux density of the diffracted field according to the detection scheme of the optical disk system. A typical digital versatile disk (DVD) system is applied with this theory, and the result is far from that of scalar diffraction theory.

© 2000 Optical Society of America

OCIS Codes
(050.1960) Diffraction and gratings : Diffraction theory
(210.4590) Optical data storage : Optical disks

Original Manuscript: October 25, 1999
Revised Manuscript: September 7, 2000
Published: December 1, 2000

Xianfu Cheng, Huibo Jia, and Duanyi Xu, "Vector diffraction analysis of optical disk readout," Appl. Opt. 39, 6436-6440 (2000)

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