25-08-2017, 09:32 PM
NEXT GENERATION OF WIRELESS COMMUNICATION FREE SPACE OPTICS (FSO)
NEXT GENERATION OF WIRELESS.pptx (Size: 522.74 KB / Downloads: 10)
ABSTRACT
Communication through optics using latest technology called Free Space Optics (FSO).
FSO does not require cable and can withstand radio jamming.
Aim – To use FSO as a complement to fiber optics
INTRODUCTION TO THE CONCEPT OF FREE SPACE OPTICS
FSO is a line-of-sight technology which uses LASERS and Photo detectors to provide optical connections between two points—without the fiber.
FSO: OPTICAL? OR WIRELESS
FSO share several characteristics with fiber optics.
It uses the same optical transmission wavelength and components as fiber optics.
Important breakthrough in FSO is the invention of Erbium Doped Fiber Amplifier (EDFA).
HOW IT WORKS ?
It is based on connectivity between FSO based optical wireless units.
Each consisting of an optical transceiver to provide full duplex capabilities
FREE SPACE OPTICS SUBSYSTEMS
On the transmitting side the important aspects are size and quality of the system.
On the receiving side the important aspects are the aperture size and the f-number
DATA SECURITY
In FSO an infrared beam slightly above the visible spectrum is used hence it is invisible to the normal human eyes.
Any attempt to interrupt the beam is possible only near the receiver terminus as it passes in a line of sight which is invisible.
ADVANTAGES OF FSO SYSTEMS
Installation cost is very low as compared to laying Fiber.
Highly secure transmission possible.
High data rates, upto 2.5 Gbps at present and 10 Gbps in the near future.
CONCLUSION
FSO provides high speed links that customers need without the cost of laying fiber to the end user.
It’s the most secure networking technologies.