NTT Develops Stamp-Size 1GB Hologram Memory

February 16, 2004 (TOKYO) — Nippon Telegraph and Telephone Corp (NTT) announced on Feb 12 that it has developed a prototype of a new high-capacity memory storage device, designed with a multi-layered waveguide structure and based on thin-film holography.
The company has produced a 100-layer postage stamp-sized media prototype with a 1GB memory capacity constructed from plastic material, and a small prototype drive for reading data”