30-03-2012, 04:46 PM
Fiber Optics Technology and its application
fiber optics.ppt (Size: 4.94 MB / Downloads: 70)
Introduction to Optical Fibers
Fibers are made of glass.
Usually 120 micrometers in diameter.
Used to carry signals in the form of light over distances up to 50 km.
WHAT IS FIBER OPTICS
Transmitting communications signals over hair thin strands of glass or plastic
Not a "new" technology
Concept a century old
Used commercially for
last 25 years
FIBER OPTICS Components
Core – thin glass center of the fiber where light travels.
Cladding – outer optical material surrounding the core
Buffer Coating – plastic
coating that protects
the fiber.
Multimode Fibre .
Multimode fiber, the first to be manufactured and commercialized, simply refers to the fact that numerous modes or light rays are carried simultaneously through the wave guide.
Modes result from the fact that light will only propagate in the fiber core at discrete angles within the cone of acceptance.
Uses of Fibre optic cables
A fiber-optic system is similar to the copper wire system that fiber-optics is replacing. The difference is that fiber-optics use light pulses to transmit information instead of using electronic pulses to transmit information as in case of copper lines.
They span the long distances between local phone systems as well as providing the backbone for many network systems. Other system users include cable television services, university campuses, office buildings, industrial plants, and electric utility companies.
Conclusion
The compilation of the project clearly amplifies the utility of fiber optics and cables, how it is utilised for transmits more information, more quickly and over longer distances with a greater security without interference.