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Cavity enhanced eigenmode multiplexing for volume holographic data storage
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Paper Abstract

Previously, we proposed and experimentally demonstrated enhanced recording speeds by using a resonant optical cavity to semi-passively increase the reference beam power while recording image bearing holograms. In addition to enhancing the reference beam power the cavity supports the orthogonal reference beam families of its eigenmodes, which can be used as a degree of freedom to multiplex data pages and increase storage densities for volume Holographic Data Storage Systems (HDSS). While keeping the increased recording speed of a cavity enhanced reference arm, image bearing holograms are multiplexed by orthogonal phase code multiplexing via Hermite-Gaussian eigenmodes in a Fe:LiNbO3 medium with a 532 nm laser at two Bragg angles for expedited recording of four multiplexed holograms. We experimentally confirmed write rates are enhanced by an average factor of 1.1, and page crosstalk is about 2.5%. This hybrid multiplexing opens up a pathway to increase storage density while minimizing modifications to current angular multiplexing HDSS.

Paper Details

Date Published: 23 August 2017
PDF: 9 pages
Proc. SPIE 10384, Optical Data Storage 2017: From New Materials to New Systems, 1038406 (23 August 2017); doi: 10.1117/12.2272613
Show Author Affiliations
Bo E. Miller, College of Optical Sciences, The Univ. of Arizona (United States)
Yuzuru Takashima, College of Optical Sciences, The Univ. of Arizona (United States)


Published in SPIE Proceedings Vol. 10384:
Optical Data Storage 2017: From New Materials to New Systems
Ryuichi Katayama; Yuzuru Takashima, Editor(s)

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