InPhase Technologies announced today that it has demonstrated the highest data density of any commercial technology by recording 515 gigabits of data per square inch.

InPhase will deliver the industry’s first holographic drive and media later this year. The first generation drive has a capacity of 300 gigabytes on a single disk with a 20 megabyte per second transfer rate. The first product will be followed by a family ranging from 800GB to 1.6 terabyte (TB) capacity.

In this demonstration there were over 1.3 million bits per data page, and 320 data pages spaced 0.067 degrees apart were stored in the same volume of material. A collection of data pages is referred to as a book, and InPhase’s PolyTopic recording architecture enables more holograms to be stored in the same volume of material by overlapping not only pages, but also books. Three tracks of overlapping books were written with a track pitch of 700 microns. The InPhase TapestryTM material was 1.5 millimeters thick, and the laser wavelength was 407 nanometers.

In this demonstration the average exposure time per page was 2.7 milliseconds, which translates into a user write transfer rate of 23 megabytes per second.

The impact that these data densities will have on future products is tremendous. For the home video fan, one disk could hold the equivalent of 106 DVD movies.

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