Fluorescence-based Multi-layer Optical Media for Mass Information Distribution

摘要

Owing to its inexpensive media and ease of reproduction, optical discs are currently the preferred method for distribution of large quantities of information. Computer software, music, and video are among the most popular forms of data encoded on digital optical discs. Unfortunately, the theoretical limits in terms of the capacity of the planar optical disc are quickly being reached. Despite the gains that may be made from alternative laser sources and improved coding techniques, it is becoming more and more apparent that a new storage technology will be necessary as the successor to the reflective optical disc. There are several new optical technologies currently being investigated including multi-layer reflective media,~1 near-field recording,~2 volume holography,~(3,4) two-photon storage,~(5,6) point index modulation,~7 and others. With the exception of near field recording all of these technologies take advantage of the increase in capacity that can be gained by expanding data storage into the third dimension of a thick media. In this talk we will present a new 3D optical storage media which puts together the advantages of many of the technologies listed above, such as high recording density and parallel readout capability, and in addition provides a storage medium in which it may be possible to stamp multiple layers of data simultaneously. Rapid stamping of large quantities of information is a necessary requirement for any media to be used in mass information distribution applications.