The Future in Data Storage Holographic Optical Data Storage
<ul><li>Holographic Optical Data Storage (HODS) or Holographic Data Storage System (HDDS) </li></ul><ul><ul><li>The Revolu...
<ul><li>Pieter J. van Heerden first proposed the idea of holographic (three-dimensional) storage in the early 1960s. </li>...
Why Do We Need This? <ul><li>“ For Internet applications alone, industry estimates are that storage needs are doubling eve...
Overview of  HODS
  The Practical Setup
The  Green  Argon Laser <ul><li>Laser light is a green 514.5-nm line of an argon-ion laser. </li></ul><ul><li>The system i...
What is   SLM   ? <ul><li>SLM -  Spatial Light Modulator . </li></ul><ul><li>SLM consists 1-D or 2-D arrays of light modul...
About  Lithium Niobate  Crystal <ul><li>Chemical Formula- LiNbO 3 . </li></ul><ul><li>It has high photorefractive sensitiv...
What is  CCD  ? <ul><li>CCD - Charge Coupled Device . </li></ul><ul><li>Its structure was proposed in 1969 by Boyle & Smit...
Storage of one bit of information as  a Hologram. a)  Superposition of spherical  wave from one bit with a coherent plane ...
Recording <ul><li>Data stream is sent to the SLM as 0’s and  </li></ul><ul><li>1’s. </li></ul><ul><ul><li>Forms a “checker...
Recording by Figure
Reading <ul><li>Beam no longer split  </li></ul><ul><li>Reference beam is diffracted off the recorded grating (hologram) <...
Reading by Figure
Impacts <ul><li>The everyday user might not notice the impact other than more space on his/her computer. </li></ul><ul><li...
Future Applications <ul><li>Imagine the capability of 6,840 raw uncompressed high quality Video/TV hours, or 2,100,000 che...
Future Applications
Long Term ! <ul><li>Eventually HODS’s may take over magnetic and optical devices all together </li></ul><ul><ul><li>DVD’s ...
Market Prospects <ul><li>Current storage memory market exceeds $100 billion dollars worldwide </li></ul><ul><ul><li>$47 bi...
Who is Involved… <ul><li>InPhase Technologies , venture of  Lucent Technologies </li></ul><ul><ul><li>Exclusive purpose is...
Interesting Facts <ul><li>With predicted technology a   1cm 3   laser cube is equal to : </li></ul><ul><li>-  6,944,440  1...
Conclusion <ul><li>Built on technology that’s around for 40+ years </li></ul><ul><li>HODS may be the future of data storag...
Further Research/Bibliography <ul><li>www.lucent.com/press/0101/010130.bla.html </li></ul><ul><li>http://www.research.ibm....
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Holographic optical data storage jyoti-225

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Holographic optical data storage jyoti-225

  1. 1. The Future in Data Storage Holographic Optical Data Storage
  2. 2. <ul><li>Holographic Optical Data Storage (HODS) or Holographic Data Storage System (HDDS) </li></ul><ul><ul><li>The Revolutionary data storage technology </li></ul></ul><ul><ul><li>Uses images (holograms) rather than bits to store data </li></ul></ul><ul><ul><li>Images imposed in material </li></ul></ul><ul><ul><li>Uses a combination of Lasers & Optical materials to achieve this . </li></ul></ul><ul><ul><li>This is a Volumetric approach. </li></ul></ul>Introduction
  3. 3. <ul><li>Pieter J. van Heerden first proposed the idea of holographic (three-dimensional) storage in the early 1960s. </li></ul><ul><li>A decade later, scientists at RCA Laboratories demonstrated the technology by recording 500 holograms in an iron-doped lithium-niobate crystal . </li></ul><ul><li>The advent of Semiconductor & magnetic memories stalled its research for much time but it is now picking up momentum. </li></ul>The Beginning
  4. 4. Why Do We Need This? <ul><li>“ For Internet applications alone, industry estimates are that storage needs are doubling every 100 days” </li></ul><ul><li>-Nelson Diaz, Lucent Technologies </li></ul><ul><li>“ Optoelectronics Industry and Technology Development Association projects that by the year 2010, a storage system serving an average LAN will need … 10 TB and a WAN server will require 100 TB to 1 petabyte …of storage” </li></ul><ul><li>- Red Herring </li></ul>
  5. 5. Overview of HODS
  6. 6. The Practical Setup
  7. 7. The Green Argon Laser <ul><li>Laser light is a green 514.5-nm line of an argon-ion laser. </li></ul><ul><li>The system is equipped with an argon (514.5-nm) or a krypton (676-nm) laser </li></ul><ul><li>Optical power delivered to the apparatus prior to the object/reference beam splitter is as much as 100-400 mW . </li></ul>
  8. 8. What is SLM ? <ul><li>SLM - Spatial Light Modulator . </li></ul><ul><li>SLM consists 1-D or 2-D arrays of light modulating elements. </li></ul><ul><li>SLM converts the digital data 1’s or 0’s into a 2-D array of bright & dark spots. </li></ul><ul><li>SLM is used to imprint the data on the object beam. </li></ul>
  9. 9. About Lithium Niobate Crystal <ul><li>Chemical Formula- LiNbO 3 . </li></ul><ul><li>It has high photorefractive sensitivity & stability. </li></ul><ul><li>It has trigonal structure. </li></ul><ul><li>Molecular weight - 147.9. </li></ul><ul><li>Band gap - 4eV </li></ul>
  10. 10. What is CCD ? <ul><li>CCD - Charge Coupled Device . </li></ul><ul><li>Its structure was proposed in 1969 by Boyle & Smith. </li></ul><ul><li>CCD is a light sensitive device. </li></ul><ul><li>CCD converts pixels in images into electric charge. </li></ul><ul><li>CCD contains a separate value for each colour. </li></ul>
  11. 11. Storage of one bit of information as a Hologram. a) Superposition of spherical wave from one bit with a coherent plane wave reference beam forming an interference pattern. b) Exposure of a photosensitive medium to the interference pattern. c) Record of the interference grating, stored as changes in the properties of the medium. Storage inside the Photosensitive Medium
  12. 12. Recording <ul><li>Data stream is sent to the SLM as 0’s and </li></ul><ul><li>1’s. </li></ul><ul><ul><li>Forms a “checkerboard” pattern </li></ul></ul><ul><ul><ul><li>1’s transmit light, 0’s block light </li></ul></ul></ul><ul><li>Beam is split </li></ul><ul><ul><li>Light passing through SLM is the signal (object) beam </li></ul></ul><ul><ul><li>Reflected beam is the reference beam </li></ul></ul><ul><li>Beams interfere in the medium to produce hologram much like before </li></ul>
  13. 13. Recording by Figure
  14. 14. Reading <ul><li>Beam no longer split </li></ul><ul><li>Reference beam is diffracted off the recorded grating (hologram) </li></ul><ul><ul><li>Reconstructs matrix </li></ul></ul><ul><li>Projected using optic onto CCD </li></ul><ul><ul><li>Converts into data stream </li></ul></ul>
  15. 15. Reading by Figure
  16. 16. Impacts <ul><li>The everyday user might not notice the impact other than more space on his/her computer. </li></ul><ul><li>Big benefactors are big business and internet </li></ul><ul><ul><li>Parallel data storage and retrieval allows for very fast data excess for number crunching and experiments (much faster computation times). </li></ul></ul><ul><ul><li>Much faster data access for internet servers as well as much larger storage densities. </li></ul></ul><ul><ul><li>Cheaper cost per Megabyte once mainstream. </li></ul></ul><ul><li>Data storage for libraries, documents and so forth will be cheaper and take up less space and access will be much faster. </li></ul>
  17. 17. Future Applications <ul><li>Imagine the capability of 6,840 raw uncompressed high quality Video/TV hours, or 2,100,000 chest x-rays, or nearly 10,000,000 high-resolution images, or 30,000 four-drawer filing cabinets of documents or 20,000 DVD'S Worm's or 4,000 BLU-Ray Worm disk's on ONE 10 Terabyte 3.5 in. removable disc. </li></ul>
  18. 18. Future Applications
  19. 19. Long Term ! <ul><li>Eventually HODS’s may take over magnetic and optical devices all together </li></ul><ul><ul><li>DVD’s with 10 terabytes on them ! </li></ul></ul><ul><ul><li>Less need for compression techniques (depending on internet communications) </li></ul></ul><ul><ul><li>Even smaller computers (hard drive one of the largest components) </li></ul></ul><ul><ul><li>Less power to drive = longer lasting laptops </li></ul></ul>
  20. 20. Market Prospects <ul><li>Current storage memory market exceeds $100 billion dollars worldwide </li></ul><ul><ul><li>$47 billion is solely hard disk, $42 billion magnetic tape drives, $6 billion optical disk </li></ul></ul><ul><li>This is growing at 40% a year (1998) </li></ul><ul><li>HODS has the possibility of taking over this entire market </li></ul><ul><ul><li>Can assimilate all these data storage types </li></ul></ul><ul><ul><li>Little to no competitive alternatives on the horizon </li></ul></ul>
  21. 21. Who is Involved… <ul><li>InPhase Technologies , venture of Lucent Technologies </li></ul><ul><ul><li>Exclusive purpose is to develop high-performance holographic data storage media </li></ul></ul><ul><ul><li>Seem to be leaders in viable product, near useable solution </li></ul></ul><ul><li>Government and other participants donate $32 million for research </li></ul><ul><ul><li>Large majority of research focused at Standford and IBM ’s Almaden Research Facility </li></ul></ul>
  22. 22. Interesting Facts <ul><li>With predicted technology a 1cm 3 laser cube is equal to : </li></ul><ul><li>- 6,944,440 1.44MB floppy discs </li></ul><ul><li>- 14,286 700 MB CD-ROM’s </li></ul><ul><li>40 250 GB hard drives </li></ul><ul><li>25 million books of the Library of Congress(US) </li></ul>
  23. 23. Conclusion <ul><li>Built on technology that’s around for 40+ years </li></ul><ul><li>HODS may be the future of data storage </li></ul><ul><ul><li>HUGE capacity, Very fast, Smaller </li></ul></ul><ul><ul><li>Parallel processing </li></ul></ul><ul><li>Current storage methods nearing their fundamental limits of storage density </li></ul><ul><li>Stationary parts for some techniques </li></ul><ul><li>Meets the demand for a capacity hungry society </li></ul><ul><li>Large market and little new competition </li></ul>
  24. 24. Further Research/Bibliography <ul><li>www.lucent.com/press/0101/010130.bla.html </li></ul><ul><li>http://www.research.ibm.com/research/press/holographic.html </li></ul><ul><li>http://www.research.ibm.com/journal/rd/443/ashley.pdf </li></ul><ul><li>http://www.imation.com/about/news/newsitem/0%2C1233%2C298%2C00.html </li></ul><ul><li>http://www.pitt.edu/~drew1/2089/holo.htm </li></ul><ul><li>http://www.sciam.com/2000/0500issue/0500toigbox5.html </li></ul>
  25. 25. Thank you for listening to my presentation! The future is here

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