Co-extruded multilayer films for high capacity optical data storage

Cory W. Christenson; Chris Ryan; Brent Valle; Anuj Saini; Joseph Lott; Jack Johnson; David Shiraldi; Christoph Weder; Eric Baer; Kenneth D. Singer; Jie Shan

doi:10.1117/12.929298

11 October 2012 Co-extruded multilayer films for high capacity optical data storage

Cory W. Christenson, Chris Ryan, Brent Valle, Anuj Saini, Joseph Lott, Jack Johnson, David Shiraldi, Christoph Weder, Eric Baer, Kenneth D. Singer, Jie Shan

Author Affiliations +

Proceedings Volume 8486, Current Developments in Lens Design and Optical Engineering XIII; 848610 (2012) https://doi.org/10.1117/12.929298
Event: SPIE Optical Engineering + Applications, 2012, San Diego, California, United States

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.

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Cory W. Christenson, Chris Ryan, Brent Valle, Anuj Saini, Joseph Lott, Jack Johnson, David Shiraldi, Christoph Weder, Eric Baer, Kenneth D. Singer, and Jie Shan "Co-extruded multilayer films for high capacity optical data storage", Proc. SPIE 8486, Current Developments in Lens Design and Optical Engineering XIII, 848610 (11 October 2012); https://doi.org/10.1117/12.929298

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KEYWORDS

Data storage

Modulation

Absorption

Multilayers

Optical storage

Sensors

Diffraction

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