A Review Paper on 3D Optical Data Storage

Abstract

Since the past couple of decades, optical data storage has been the most primary means of digital circulation. To accommodate new demands and applications, there has been an improvement in the storage capacity of such devices. However, limitations in the optics have hindered the growth of these devices. The demand for bigger, faster memories has led to significant improvements in conventional memory technologies—hard disk drives & optical disks. But there is strong proof that these two-dimensional storage technologies are approaching fundamental limits- as the wavelength of light and the thermal stability of stored bits. Such limitations may be difficult to surmount. Storing data in three dimensions is a suitable approach to overcome these limitations and to also increase the storage level by a large amount.