Till now, we have seen optical discs as large as 50Gb. But, with the ongoing trend in the multimedia encoding this capacity won’t be enough in future. Consider that, FujiFilm has been working on increasing the capacity of optical discs. Through discovering a new recording method for optical discs, the company hopes to introduce 1TB optical discs in 2015.
Fujifilm has developed the new recording method for optical discs by using two-photon absorption technique to generate heat. The two-photon absorption can be limited to the small area of the focal point of a laser light. So, it is possible to increase the number of recording layers on optical discs. This method is capable of realizing a recording density of 25 Gbytes per layer, which is equivalent to the recording density of blu-ray discs. According to the calculation of Fujifilm, this new method would allow them to increase the recording layers up to 20 on each side of a disc. FujiFilm believes it is theoretically possible to make a double-sided optical disc with a 1TB storage capacity and the new recording method has a potential to realize a 15-TB disc in the future, and at a cost as low as a magnetic tape.
FujiFilm said, “It takes 147 seconds to form a four-layer BD (Blu-ray Disc). With our method, it takes only 58 seconds to form eight layers. In the future, it will be possible to realize a 15-Tbyte optical disc (25 Gbytes/layer x 3 (eight values) x 100 layers x 2 (two sides).”
Fujifilm mentioned that the cost of manufacturing of this new disc will be cheaper than blu-ray discs. FujiFilm hopes they’ll be able to deliver a 1TB optical disc to the consumer market by 2015, with a possibility of a 15TB disc on the horizon. You can view the paper that FujiFilm released on its research, along with some of the more technical aspects to the method to which they propose the introduction of a 1TB (and possible 15TB) optical disc below.
Thanks To : PsyOrg
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