ABOUT ENGINEERING PRESENTATION

1. HOLOGRAPHIC
DATA STORAGE
Presented by
YUGITHA M
SANDHIYA PACHAMUTHU

2. WHAT IS HOLOGRAPHIC ?
 Holographic Data Storage is a way
of storing data using light instead
of traditional methods like hard
drives or CDs. It uses laser beams
to save data in 3D patterns inside
special materials. This method can
store more data, retrieve it faster,
and last longer than normal storage
devices.

3. HOLOGRAPHIC VERSATILE DISK
A Holographic Versatile Disk (HVD) is an advanced
storage device that uses laser beams to store data
in 3D layers inside a disk.
It can hold much more data than CDs or DVDs, up
to 1 Terabyte or more, with faster data transfer
speeds. HVD is mainly used for large data storage
and backups in industries.

4. HOW IT WORKS?
 How Holographic Data Storage Works (Simple Words)
 Splitting Laser Beam:
A laser light is divided into two beams:
 One beam carries the data (like 0s and 1s).
 The other beam acts as a reference to help read the
data later.
 Creating Patterns:
Both beams meet inside a special material (like glass
or crystal), creating light patterns called holograms.
These patterns store the data in 3D layers..

5.  Storing Data:
The hologram is saved inside the
material, not just on the surface like
CDs or DVDs.
 Reading Data:
When the reference beam shines on
the stored hologram, the original data
is recreated and read by the system.
 ✅ This method is faster, stores more
data, and lasts longer than normal
storage devices.

6. CONCLUSION
Holographic data storage holds
the potential to transform the way
we store and access data in the
future. Its high capacity, speed,
and longevity make it a promising
solution for the ever-growing data
storage needs of the digital world.