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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Vol. 35, Iss. 7 — Mar. 1, 1996
  • pp: 1107–1119

Optimization of groove depth for cross-talk cancellation in the scheme of land–groove recording in magneto-optic disk systems

Timothy D. Goodman and M. Mansuripur  »View Author Affiliations


Applied Optics, Vol. 35, Issue 7, pp. 1107-1119 (1996)
http://dx.doi.org/10.1364/AO.35.001107


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Abstract

In the scheme of land-groove recording in magneto-optic disk data-storage systems, it has been shown that an optimum groove depth exists at which the cross talk from adjacent tracks diminishes. Cross-talk cancellation, however, is very sensitive to various parameters of the system, and, in particular, the presence of substrate birefringence can have devastating effects on system performance. We analyze the origin of the observed effects by using scalar diffraction theory, and we show the reasons behind cross-talk cancellation. We also explain the relation between substrate birefringence and cross talk in simple analytical terms. Extensive computer simulations have been performed to verify and extend the theoretical results of this paper; the results of some of these simulations are also presented.

© 1996 Optical Society of America

History
Original Manuscript: February 15, 1995
Revised Manuscript: September 20, 1995
Published: March 1, 1996

Citation
Timothy D. Goodman and M. Mansuripur, "Optimization of groove depth for cross-talk cancellation in the scheme of land–groove recording in magneto-optic disk systems," Appl. Opt. 35, 1107-1119 (1996)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-35-7-1107


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References

  1. A. Fukumoto, S. Masuhara, K. Aratani, “Cross-talk analysis of land/groove magneto-optical recording,” in Optical Memory & Neural Networks ’94: Optical Memory, A. L. Mikaelian, ed., Proc. Soc. Photo-Opt. Instrum. Eng.2429, 41–42 (1994).
  2. H. Honma, T. Iwanaga, K. Kayanuma, M. Nakada, R. Katayama, K. Kobayashi, S. Itoi, H. Inada, “High density land/groove recording using PRML technology,” in Optical Data Storage, Vol. 10 of 1994 OSA Technical Digest Series (Optical Society of America, Washington, D.C., 1994), paper WD1-1.
  3. H.H. Hopkins, “Diffraction theory of laser readout systems for optical video disks” J. Opt. Soc. Am. 69, 4–24 (1979).
  4. G. Bouwhuis, J. J. M. Braat, “Recording and reading of information on optical disks,” in Applied Optics and Optical Engineering, R. R. Shannon, J. C. Wyant, eds. (Academic, New York, 1983), Vol. 9.
  5. G. Bouwhuis, J. Braat, A. Huijser, J. Pasman, G. Van Rosmalen, K. Schouhamer Immink, Principles of Optical Disc Systems (Hilger, Bristol, 1985).
  6. P. Sheng, “Theoretical considerations of optical diffraction from RCA video disc signals,” RCA Rev. 39, 512–555 (1978).
  7. M. Mansuripur, The Physical Principles of Magneto-optical Recording (Cambridge U. Press, Cambridge, England, 1995), Chap. 6, pp. 187–193.
  8. H. Fu, S. Sugaya, J. K. Erwin, M. Mansuripur, “Measurement of birefringence for optical recording disk substrates,” Appl. Opt. 33, 1938–1949 (1994).
  9. The computer program DIFFRACT is commercially available from MM Research Company, Tucson, Ariz. 85718.The theoretical basis of this program is described in the following papers: M. Mansuripur, “Certain computational aspects of vector diffraction problems,” J. Opt. Soc. Am. A 6, 786–805 (1989);“Analysis of multilayer thin-film structures containing magneto-optic and anisotropic media at oblique incidence using 2 × 2 matrices,” J. Appl. Phys. 67, 6466–6475 (1990).

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