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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Vol. 38, Iss. 23 — Aug. 10, 1999
  • pp: 5066–5072

Theoretical study of signal-to-noise ratio on near-field photochromic memory with fluorescence readout

Tsuyoshi Tsujioka and Masahiro Irie  »View Author Affiliations


Applied Optics, Vol. 38, Issue 23, pp. 5066-5072 (1999)
http://dx.doi.org/10.1364/AO.38.005066


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Abstract

The signal-to-noise ratio (SNR) on the fluorescence readout of a near-field photochromic memory was theoretically studied. Under various conditions the shot-noise-limited SNR was analyzed. SNR by bright spot recording (BSR) that was better than that by dark spot recording (DSR) was obtained under the condition of low writing power or wide bandwidth. Under the condition of bandwidth W = 1 MHz and Pwrite = 10-8 W only BSR can attain sufficiently high SNR, and the SNR was greater by as much as 30 dB than that of DSR. It was concluded that BSR is a promising method for high-density near-field photochromic memory with a fluorescence readout.

© 1999 Optical Society of America

OCIS Codes
(210.0210) Optical data storage : Optical data storage
(210.4770) Optical data storage : Optical recording
(210.4810) Optical data storage : Optical storage-recording materials

History
Original Manuscript: December 22, 1998
Revised Manuscript: April 27, 1999
Published: August 10, 1999

Citation
Tsuyoshi Tsujioka and Masahiro Irie, "Theoretical study of signal-to-noise ratio on near-field photochromic memory with fluorescence readout," Appl. Opt. 38, 5066-5072 (1999)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-38-23-5066

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