How Holography Works?
A hologram is like a three-dimension few millimeters thick photograph. Light from a laser is split into two beams, one being the signal (which carries the data) and the second is the reference. Data is recorded through the signal beam. When the two beams overlap and create a holograman interference pattern consisting of light bands of varying degrees of brightnessinformation is recorded as pages of binary data onto a photosensitive media. And that is why it is able to store data much faster. Data can be read from a holographic storage device at the rate of 1Gbps. For example, a frame of a movie is stored instantly on the optical recording media compared to magnetic data points that make up the entire image in the frame. Holographic disks are expected to be able to store 125 GB of data on a removable 5.25-inch disk. 27 DVD disks (4.7 GB per disk) would be required to hold the same amount of data. Next generation holographic devices will be able to store a single terabyte of data with ab
