Holographic data storage is a mass storage technology that uses holograms to store information in a much smaller space than current technologies. The technology works by splitting a laser beam into a signal beam and reference beam. When the beams intersect in a light-sensitive medium, they record a hologram. Holographic storage has advantages over technologies like hard drives and DVDs by allowing much higher data density and faster read/write speeds. However, it also has disadvantages like high development costs and uncertainty if it will become the standard over other improving technologies.

1. Future Technology

2. Content
. Introduction
. What is Holographic Data Storage ?
. How Does Holographic Data Storage Work ?
. Technology Comparison
. Reason for Developing HDS
. Advantages
. Disadvantages
. Sources

3. Introduction
Holographic Memory came into existence
to provide service of high data volume
devices & to increase their data transfer
rate for processing by ultra speed
microprocessor.

4. Holographic Data Storage is a mass storage technology
that uses three-dimensional holographic images to
enable more information to be stored in a much smaller
space.
The technology uses holograms which are created
when a light from a single laser beam is split into two
beams; the signal beam(which carries the data) and the
reference beam.
In holographic storage, at the point where the reference
beam and the data carrying signal beam intersect, the
hologram is recorded in the light sensitive storage
medium.

5. 1. The object is converted into binary code of 1’s
and 0’s like we use today.
2. Next, the 1’s and 0’s are converted into a matrix
of light and dark squares.

6. 3. Those light and dark squares are then
electronically sent to a spatial light modulator
(SLM).
4. The laser beam then shines through the
spatial light modulator (SLM).
5. Pixels of the spatial light modulator filter
(block or allow) the light thus encoding the
data into the laser beam.

7. SLM
Objective Lens
Cover Layer
Recording Layer
Reflective Layer
Inner: Information
Outer: Reference
Diffracted information
beam (page data)
Diffracted reference
beam (modulated)
Recorded Hologram

9. Reason for Developing HDS…
. Replacement as a backup media
Higher data density than tape and current Hard Drives.
Data is stable for an estimated 50 years without degrading.
Faster read and write speeds.
. Replacement for DVD
Higher data density than Blue-Ray.
Faster read and write speeds.
Increase resolution for TVs will require more storage for
movies and games.

10. ADVANTAGES
. Three-dimension data storage will be able to store
more information in a smaller space and offer
faster data transfer times.
. Unlike other technologies that record one data
bit at a time, holography records and reads
more than a million bits of data with a signal
flash of light.
. This enables significantly higher transfer rates
than current optical storage devices.

11. DISADVANTAGES
. Not a guaranteed market leader :
If another technology becomes the industry
standard then read/write equipment will be hard to
find
. Expensive development :
Existing technology is becoming better and
cheaper
It is difficult to market a product that is more
expensive per GB of storage.

12.  The Economist, Holographic data storage, Jul 31, 2003,
http://www.economist.com/node/1956881
 General Electric Global Research
 InPhase Technologies, Longmont, Colorado,
http://www.inphase-technologies.com/
 Wikipedia – Holographic Data Storage,
http://en.wikipedia.org/wiki/Holographic_data_storage
 Bell Laboratories Physical Sciences Research,
http://www.bell-
labs.com/org/physicalsciences/projects/hdhds/1.html
 How Holographic Memory Will Work by Kevin Bosner.
http://computer.howstuffworks.com/holographic-
memory1.htm
 Optware Corporation of America, Longmont, Colorado,
http://www.thic.org/pdf/Jul05/optware.mdeese.050719.pdf
 Technology Review, July 2010,

13. THANK
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