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Title

The road to multi-dimensional bit-by-bit optical data storage

Author(s)

Gu, Min;  Li, Xiangping

Abstract

Recent advances in optical data storage have led to the development of a five-dimensional device that could hold up to 2,000 times more data than a conventional DVD. Bit-by-bit optical data storage uses photons to introduce a localized physical or chemical property change such as photoinduced fluorescence or reflectance modulation as information storing processes. When an optical disc is scanned, pre-stored information can be retrieved back by detecting the intensity variation of the reading beam. Researchers have pursued further research to explore the feasibility of three-dimensional (3-D) optical data storage, such as double-layer DVDs and double-layer Blu-ray discs. They have also introduced the 2P excitation technique into 3-D optical data storage with two orthogonal beams intersecting inside the focuses of two objectives. Since 2P absorption is a highly nonlinear process, a high-power pulsed laser is generally required to facilitate the 2P process. The urgent demand for more capacity compels the development of ultra-high-density storage devices.

Publication type

Journal article

Research centre

Swinburne University of Technology. Faculty of Engineering and Industrial Sciences. Centre for Micro-Photonics

Source

Optics and Photonics News, Vol. 21, no. 6 (2010), pp. 28-33

Publication year

2010

Keyword(s)

Multi-dimensional;  Optical data storage;  Storage devices

Publisher

Optical Society of America

ISSN

1047-6938

Publisher URL

http://dx.doi.org/10.1364/OPN.21.7.000028

Copyright

Copyright © 2010 Optical Society of America. Published version of the paper reproduced here in accordance with the copyright policy of the publisher. This paper was published in Optics and Photonics News and is made available as an electronic reprint with the permission of OSA. The paper can be found at the following URL on the OSA website: http://www.opticsinfobase.org/abstract.cfm?URI=OPN-21-7-28. Systematic or multiple reproduction or distribution to multiple locations via electronic or other means is prohibited and is subject to penalties under law..

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