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

Chubing Peng, Masud Mansuripur

Research output: Contribution to journalArticle

1 Citation (Scopus)

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.

Original languageEnglish (US)
Pages (from-to)3479-3486
Number of pages8
JournalApplied Optics
Volume41
Issue number17
StatePublished - Jun 10 2002

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Optical data storage
data storage
Optical recording
electronics
readout
Lenses
electronic filters
waveforms
Genetic algorithms
Modulation
Wavelength
Lasers
numerical aperture
genetic algorithms
recording
lenses
modulation
output
wavelengths
lasers

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics

Cite this

Partial-response signaling for phase-change optical data storage without electronic equalization. / Peng, Chubing; Mansuripur, Masud.

In: Applied Optics, Vol. 41, No. 17, 10.06.2002, p. 3479-3486.

Research output: Contribution to journalArticle

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