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Optics Letters

Optics Letters

| RAPID, SHORT PUBLICATIONS ON THE LATEST IN OPTICAL DISCOVERIES

  • Editor: Anthony J. Campillo
  • Vol. 31, Iss. 9 — May. 1, 2006
  • pp: 1304–1306

White light micrograting multiplexing for high density data storage

Jame J. Yang and Michael R. Wang  »View Author Affiliations


Optics Letters, Vol. 31, Issue 9, pp. 1304-1306 (2006)
http://dx.doi.org/10.1364/OL.31.001304


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Abstract

Recording of multiplexed microholographic gratings with improved recording volume for high density optical data storage is proposed and demonstrated. By using a hybrid diffractive–refractive objective lens with extended depth of focus, we have achieved a recording beam size of approximately 1 μ m and a focal depth of 20 μ m . Multiple gratings corresponding to spectral lines within the 400 650 nm spectral band have been successfully multiplexed in a single recording spot or pit of size 1.25 μ m on a DuPont photopolymer film using a white light source along with narrowband filters or dispersion elements, thus demonstrating the storage of multiple bits in a single pit. Simultaneous readout of multiple bits in a single storage pit is accomplished with a microspectrometer-type readout head using a white light source.

© 2006 Optical Society of America

OCIS Codes
(210.0210) Optical data storage : Optical data storage
(210.2860) Optical data storage : Holographic and volume memories

ToC Category:
Optical Data Storage

History
Original Manuscript: December 22, 2005
Revised Manuscript: January 31, 2006
Manuscript Accepted: February 3, 2006

Citation
Jame J. Yang and Michael R. Wang, "White light micrograting multiplexing for high density data storage," Opt. Lett. 31, 1304-1306 (2006)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-31-9-1304

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