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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Editor: James C. Wyant
  • Vol. 45, Iss. 8 — Mar. 10, 2006
  • pp: 1794–1803

Proposal for a multilayer read-only-memory optical disk structure

Isao Ichimura, Kimihiro Saito, Takeshi Yamasaki, and Kiyoshi Osato  »View Author Affiliations


Applied Optics, Vol. 45, Issue 8, pp. 1794-1803 (2006)
http://dx.doi.org/10.1364/AO.45.001794


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Abstract

Coherent interlayer cross talk and stray-light intensity of multilayer read-only-memory (ROM) optical disks are investigated. From results of scalar diffraction analyses, we conclude that layer separations above 10 µm are preferred in a system using a 0.85 numerical aperture objective lens in terms of signal quality and stability in focusing control. Disk structures are optimized to prevent signal deterioration resulting from multiple reflections, and appropriate detectors are determined to maintain acceptable stray-light intensity. In the experiment, quadrilayer and octalayer high-density ROM disks are prepared by stacking UV-curable films onto polycarbonate substrates. Data-to-clock jitters of 7 % demonstrate the feasibility of multilayer disk storage up to 200 Gbytes .

© 2006 Optical Society of America

OCIS Codes
(050.1960) Diffraction and gratings : Diffraction theory
(210.0210) Optical data storage : Optical data storage
(210.4590) Optical data storage : Optical disks

ToC Category:
Optical Data Storage

History
Original Manuscript: June 8, 2005
Revised Manuscript: September 8, 2005
Manuscript Accepted: September 26, 2005

Citation
Isao Ichimura, Kimihiro Saito, Takeshi Yamasaki, and Kiyoshi Osato, "Proposal for a multilayer read-only-memory optical disk structure," Appl. Opt. 45, 1794-1803 (2006)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-45-8-1794


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