Physics for Information Science: Unit IV: Optical Properties of Materials
Optical Data Storage Techniques
List of various techniques
Optical data storage is the storage of data in an optical medium using Laser light. Here data is recorded and read by focussing the laser on a spinning optical disk.
OPTICAL
DATA STORAGE TECHNIQUES
Optical
data storage is the storage of data in an optical medium using Laser light.
Here data is recorded and read by focussing the laser on a spinning optical
disk.
There
are various techniques by which the data can be stored using optical devices,
such as
1. CD-ROM [Read only memory]
In
this compact disk [CD] we can write and read the data, but could not re-write
the data.
2. CD-RW
In
this CD, we can write, read and re-write the data as and when required.
3. DVD
In DVD [Digital Versatile Disk], based on storage capacity, we have many types, viz.
4. Blu-ray disks
In
single layer Blu-ray disk 25 GB can be stored and in double layer blue ray disk
50 GB can be stored.
5. Magneto Optical (MO) disk
Magneto
optical disk is like magnetic computer disks, in which we can write, read,
erase and re-write the data repeatedly.
6. Holography
Holography
is also a type of latest technique in which recording and reading of
3-dimensional pictures/data shall be done, which was well known as holograms.
Let us discuss in detail about some of these techniques.
Physics for Information Science: Unit IV: Optical Properties of Materials : Tag: : List of various techniques - Optical Data Storage Techniques
Physics for Information Science: Unit IV: Optical Properties of Materials
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Physics for Information Science
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