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Proceedings Paper

Co-extruded multilayer films for high capacity optical data storage
Author(s): Cory W. Christenson; Chris Ryan; Brent Valle; Anuj Saini; Joseph Lott; Jack Johnson; David Shiraldi; Christoph Weder; Eric Baer; Kenneth D. Singer; Jie Shan
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Paper Abstract

New approaches for optical data storage (ODS) applications are needed to meet the future requirements of applications in multimedia, archiving, security, and many others. Commercial data storage technologies are moving to threedimensional (3D) materials, but the capacity is limited by the fabrication cost and the number of layers that can be addressed using the reflection-based storage mechanism. We demonstrate here storage systems based on co-extrusion of multilayer (ML) films that can overcome these problems. The organic roll-to-roll films produced can easily be produced hundreds of meters in length, in a far simpler and cheaper manner than current manufacturing methods such as spin coating and lamination. The medium consists of alternating active and buffer layers, and data storage is demonstrated by writing images in 23 layers of 78 μm thick films by fluorescence (FL) quenching of an organic dye. The areal data resolution is at the diffraction limit of the CW Blu-ray (BR) laser employed, and the co-extrusion technique allows for small layer spacings, leading to a total bit density 1.2 Tb/cm3. We anticipate materials already demonstrated successful for 3D ODS will be adapted to this technique, as well as new systems developed, to take full advantage of this medium.

Paper Details

Date Published: 11 October 2012
PDF: 7 pages
Proc. SPIE 8486, Current Developments in Lens Design and Optical Engineering XIII, 848610 (11 October 2012); doi: 10.1117/12.929298
Show Author Affiliations
Cory W. Christenson, Case Western Reserve Univ. (United States)
Chris Ryan, Case Western Reserve Univ. (United States)
Brent Valle, Case Western Reserve Univ. (United States)
Anuj Saini, Case Western Reserve Univ. (United States)
Joseph Lott, Case Western Reserve Univ. (United States)
Jack Johnson, Case Western Reserve Univ. (United States)
David Shiraldi, Case Western Reserve Univ. (United States)
Christoph Weder, Univ. of Fribourg (Switzerland)
Eric Baer, Case Western Reserve Univ. (United States)
Kenneth D. Singer, Case Western Reserve Univ. (United States)
Jie Shan, Case Western Reserve Univ. (United States)


Published in SPIE Proceedings Vol. 8486:
Current Developments in Lens Design and Optical Engineering XIII
R. Barry Johnson; Virendra N. Mahajan; Simon Thibault, Editor(s)

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