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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Vol. 41, Iss. 17 — Jun. 10, 2002
  • pp: 3479–3486

Partial-response signaling for phase-change optical data storage without electronic equalization

Chubing Peng and Masud Mansuripur  »View Author Affiliations


Applied Optics, Vol. 41, Issue 17, pp. 3479-3486 (2002)
http://dx.doi.org/10.1364/AO.41.003479


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Abstract

We describe the application of partial-response (PR) signaling in rewritable phase-change optical data storage. No electronic filter is necessary to shape the readout signal to a certain PR target. A PR-like waveform at the output of the read channel is directly achieved by optical recording. A genetic algorithm is used to optimize the parameters for writing and therefore to minimize the difference between the actual readout signal and the ideal PR waveform. With a laser wavelength of 0.66 µm and an objective lens with a numerical aperture of 0.6, four linear densities were examined: 0.4, 0.3, 0.25, and 0.2 µm/bit (without modulation). Results showed that the linear density of 0.25 µm/bit can be realized on a rewritable digital-versatile disk.

© 2002 Optical Society of America

OCIS Codes
(210.0210) Optical data storage : Optical data storage

History
Original Manuscript: November 2, 2001
Revised Manuscript: January 31, 2002
Published: June 10, 2002

Citation
Chubing Peng and Masud Mansuripur, "Partial-response signaling for phase-change optical data storage without electronic equalization," Appl. Opt. 41, 3479-3486 (2002)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-41-17-3479


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