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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Vol. 22, Iss. 14 — Jul. 15, 1983
  • pp: 2196–2201

Optically read disks with increased information density

J. Braat  »View Author Affiliations


Applied Optics, Vol. 22, Issue 14, pp. 2196-2201 (1983)
http://dx.doi.org/10.1364/AO.22.002196


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Abstract

A method is described which allows an increase of information density on optically read disks by a reduction of the track spacing by a factor of 2. The cross talk between neighboring tracks is maintained at an acceptable level by modulating from track to track the depth of the relief pattern on the disk. By an appropriate readout method (a compromise between differential and integral detection), the signals from neighboring tracks are suppressed. The layout of such a disk and the possible geometries of the relief pattern are indicated.

© 1983 Optical Society of America

History
Original Manuscript: January 19, 1983
Published: July 15, 1983

Citation
J. Braat, "Optically read disks with increased information density," Appl. Opt. 22, 2196-2201 (1983)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-22-14-2196


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References

  1. G. Bouwhuis, J. Braat, “Recording and Reading of Information on Optical Disks,” in Applied Optics and Optical Engineering, Vol. 9, R. Shannon, J. C. Wyant, Eds. (Academic, New York, 1983). [CrossRef]
  2. C. Bricot et al.IEEE Trans. Cons. Electron. CE-22, 304 (1976); R. Adler, IEEE Trans. Broadcast Telev. Receivers 20, 230 (1974); G. Hrbek, J. Soc. Motion Pict. Telev. Eng. 83, 580 (1974). [CrossRef]
  3. H. H. Hopkins, J. Opt. Soc. Am. 69, 4 (1979). [CrossRef]

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