International Journal of Civil Engineering and Technology (IJCIET) Volume 9, Issue 7, July 2018, pp. 1956–1961, Article ID: IJCIET_09_07_208 Available online at http://iaeme.com/Home/issue/IJCIET?Volume=9&Issue=7 ISSN Print: 0976-6308 and ISSN Online: 0976-6316 © IAEME Publication Scopus Indexed THE SIGNIFICANCE OF HOLOGRAPHIC DATA STORAGE IN COST EFFECTIVE AND FASTER DATA TRANSFER RATES S. Bhavani and Saloni Chhabra School of Information Technology and Engineering, VIT, Vellore, Tamil Nadu, India ABSTRACT Since the recent decades, optical information has been the most essential methods for computerized distribution. There has been a capacity limit of such gadgets. In any case, constraints in the optics have obstructed the development of these gadgets. Now- a-days there is more interest for greater and quicker advances-hard circle drives and optical plates. There has been use of pendrives, CD’s and DVD’s and hard disk etc now a days which holds large amount of data. This paper basically focuses on how 3- D optical storage works and which different methods have been used for the retrieval of data and how long does it takes to retrieve the large amount of data and how the data has been stored. 3-D optical data storage is the method that allows more than 100 layers as compared to other optical data storage. It's an approach to give petabyte-level mass stockpiling on DVD-sized discs. Key words: Capacity limit, Optical data storage, Storage of data. Cite this Article: S. Bhavani and Saloni Chhabra, The Significance of Holographic Data Storage in Cost Effective and Faster Data Transfer Rates. International Journal of Civil Engineering and Technology, 9(7), 2018, pp. 1956-1961. http://iaeme.com/Home/issue/IJCIET?Volume=9&Issue=7 1. INTRODUCTION An optical data storage is the storage which is done on an Optically Readable Medium. The role of the optical drive is that it writes the data onto a storage disc. There is a use of laser beam in optical data storage which burns the pit into a special material on the disc. The data stream which is placed in a spiral path, the data starts at the innermost track and also works on the edge of the disc. In the year 2007 it was found out by the scientists that 27% represents the optical storage of the world’s technological capacity to store the information. Optical storage varies from other data storage techniques which make use of other methods such as semiconductors. [8] 3D optical data storage is the method or the term where the data can be recorded or can be perused with three -dimensional determination.3D optical data storage has become the most http://iaeme.com/Home/journal/IJCIET 1956 [email protected] S. Bhavani and Saloni Chhabra significant area of interest as compared to 2D storage devices which has stable data storage and is cheap. Analysts have created working 3D optical information stockpiling gadgets. [9] The current optical data storage stores the data on the internal surface of the disc. The disk can contain two or more than two of these information layers which can help to increase the storage capacity. But the number of disks is limited as the addressing laser interacts with every layer which passes on the way through to and from the addressing layer. This results in noise that is limiting this technology to only 10 layers. [1] In the year 1996 F.H. Mok, G.W. Burr, and D. Psaltis described about System Metric for Holographic Memory Systems, Optics Letters. Later in 1979 K. Blotekjaer gave the limitations on Holographic Storage Capacity of Photochromic and Photorefractive Media which shows what the disadvantages of Holographic Storage Capacity were. Furumiya, M. Hatano, K. Murakami found out about M-pixel single layer electrode CCD with a high-frame- rate skip mode were found in 1922-1928. There were Error Correction for Increasing the Usable Capacity of Photorefractive Memories by M.A. Neifeld and M. McDonald in 1994 [3]. There were Partial Response Precoding for Parallel Readout Optical Memories in the year 1994 by B.H. Olson and S.C. Esener [4]. High-Density Recording in Photopolymer-Based Holographic Three-Dimensional Disks were proposed in the year 1996 by A.Pu and D. Psaltis. The use of Shift Multiplexing with Spherical Reference Waves, Applied Optics in the year 1996 and by G.W. Burr and D. Psaltis, (1998), Holographic Data Storage in the year 1998. Three-Dimensional Optical Data Storage Using Photo chromic Materials came into track proposed by S. Kawata and Y. Kawata. In the year 2003, G.W. Burr, gave the extension of the version in Encyclopedia of Optical Engineering. In the year 2008.There were G.C. Spalding, J. Courtial, and R. Di Leonardo found out about in Structured Beams and Nanoscale Optical Forces, edited by D.L. Andrews, Elsevier Press (2008). There was 400px-3D_optical_storage_cross-section which tells about the information about the optical storage. There was New Medium for Two-Photon Volumetric Data Recording and Playback was been found out. In the year 2008 it was found out that Walker, E; Rentzepis found out about Two Photon Technology: A New Dimension [15]. 2. CONCEPTS HOW DOES IT DIFFER FROM OTHER DATA STORAGE DEVICES? The 3D optical data storage has the ability to provide petabyte-level (1024 TB) mass storage on DVD-sized disks. Current optical data storage media are the CD and DVD. They store data on an internal surface of a disc. In order to increase storage capacity, two or even more of these data layers may be added. But their number is severely limited. The laser interacts with every layer that it passes through on the way to and from the addressed layer. These interactions cause noise that limits the technology to approximately 10 layers. 3D optical data storage method solves this issue by using methods where only the specifically addressed voxel (volumetric pixel) interacts substantially with the addressing light. This requires nonlinear data reading and writing methods, in particular nonlinear optics. Here also the laser light must travel through other data points till it reaches the point where reading or recording is desired. Nonlinearity ensures that these other data points do not interfere with the addressing of the desired point. [9] http://iaeme.com/Home/journal/IJCIET 1957 [email protected] The Significance of Holographic Data Storage in Cost Effective and Faster Data Transfer Rates 3. METHODS IN PRACTICE METHODS BEING USED FOR 3-D DATA STORAGE ARE AS FOLLOW 3.1. Holographic Data Storage A 3D image is a three-dimensional structure that has been framed by the obstruction of light pillars from a laser or other particular light source. Basically, there are two ways into which light from a s existing laser is part. The shaft which spreads along the flag way spreads the data while the reference pillar is intended to be easy to copy. A light shaft that spreads without meeting, a plane wave is utilized as a typical reference pillar. Impedance design between the two shafts is recorded by overlaying the two ways on the holographic medium. A big property of this added is that when lit up by a readout pillar, the flag shaft is recreated. All things are considered since some light is diffracted from the readout shaft, a frail duplicate of the flag bar is recreated. When the hologram is recorded in a thin material, the readout beam can vary from the reference beam used for recording and the scene will still appear. [7] Figure 1 The above diagram shows how the data has been transferred from one form to the other and gets recovered by the help of the method of Holographic data. 4. 3D OPTICAL DATA STORAGE 4.1. Advantages of 3D Optical Data Storage 1. Durable:-Optical media can last for longer period of when handle with proper care. 2. Transportable:-Optical media can be used on other platforms, including the PC. 3. Random Access:-Optical media provide the capability to provide a particular piece of data stored on it, independent of the other data on the volume or in the order where the data has been stored. 4. Faster data transfer:-3D optical data storage have faster data transfer rates as compared to other data storage. 5. Cheap:-They are more cost effective than the other data storage. They are most cost effective that means they have lower cost per byte. [10] http://iaeme.com/Home/journal/IJCIET 1958 [email protected] S. Bhavani and Saloni Chhabra 4.2. Disadvantages of 3D Optical Data Storage The problem that can occur during 3D optical data storage technology is that:- As we know that 3D optical data storage is highly demand in the market but it is also facing certain problems as there it is taking more time to get developed which leads to the technical issues and financial problems in the field. When there is particularly 2-photon ingestion is used, powerful lasers might be required that can be massive, hard to chill off, and posture wellbeing concerns.[2] Destructive reading:- As in 3D optical data storage there is both reading and writing processes are being carried out with the help of laser beams there is a possibility for the reading process to write for a smaller amount. Due to this there is a repetition of the reading of the data which leads to the erase of the material for eg there has been changes made in the DVD’S where there is erasing of the data from some DVD’S.We can’t use the media once again if the data has been read.