Cavity enhanced eigenmode multiplexing for volume holographic data storage

Bo E. Miller; Yuzuru Takashima

doi:10.1117/12.2272613

23 August 2017 Cavity enhanced eigenmode multiplexing for volume holographic data storage

Bo E. Miller, Yuzuru Takashima

Proceedings Volume 10384, Optical Data Storage 2017: From New Materials to New Systems; 1038406 (2017) https://doi.org/10.1117/12.2272613
Event: SPIE Optical Engineering + Applications, 2017, San Diego, California, United States

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.

Conference Presentation

Citation Download Citation

Bo E. Miller and Yuzuru Takashima "Cavity enhanced eigenmode multiplexing for volume holographic data storage", Proc. SPIE 10384, Optical Data Storage 2017: From New Materials to New Systems, 1038406 (23 August 2017); https://doi.org/10.1117/12.2272613

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