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M.R.I.E.M
Topic: Optical Fiber
Design by :
Rahul Ohlan
INDIA
Brief flow of presentation
1.
2.
3.
4.
5.
6.
7.
8.
9.
10.
Introduction
What are Optical Fibers?
Evolution of optical fiber
Structure of optical fiber
Workings principle of optical fiber
Classification of optical fiber
Optical fiber communication system
Advantages / Disadvantages of Optical fiber
Applications of Optical fiber
Conclusion
Evolution of optical fiber
•
•
•
•
•
•
•
1880 – Alexander Graham Bell
1930 – Patents on tubing
1950 – Patent for two-layer glass wave-guide
1960 – Laser first used as light source
1965 – High loss of light discovered
1970s – Refining of manufacturing process
1980s – OF technology becomes backbone of long distance telephone networks in NA.
What is optical Fiber?
• An optical fiber is a hair thin cylindrical fiber of glass or any transparent dielectric medium.
• The fiber which are used for optical communication are wave guides made of transparent dielectrics.
• Its function is to guide visible and infrared light over long distances.
Structure of optical fiber
• Core – central tube of very thin size made up of optically transparent dielectric medium and carries the light form transmitter to receiver. The core diameter can vary from about 5um to 100 um.
• Cladding – outer optical material surrounding the core having reflecting index lower than core. It helps to keep the light within the core throughout the phenomena of total internal reflection.
• Buffer Coating – plastic coating that protects the fiber made of silicon rubber. The typical diameter of fiber after coating is 250-300 um.
Working principle
Total Internal Reflection
• When a ray of light travels from a denser to a rarer medium such that the angle of incidence is greater than the critical angle, the ray reflects back into the same medium this phenomena is called total internal reflection. • In the optical fiber the rays undergo repeated total number of reflections until it emerges out of the other
Topic: Optical Fiber
Design by :
Rahul Ohlan
INDIA
Brief flow of presentation
1.
2.
3.
4.
5.
6.
7.
8.
9.
10.
Introduction
What are Optical Fibers?
Evolution of optical fiber
Structure of optical fiber
Workings principle of optical fiber
Classification of optical fiber
Optical fiber communication system
Advantages / Disadvantages of Optical fiber
Applications of Optical fiber
Conclusion
Evolution of optical fiber
•
•
•
•
•
•
•
1880 – Alexander Graham Bell
1930 – Patents on tubing
1950 – Patent for two-layer glass wave-guide
1960 – Laser first used as light source
1965 – High loss of light discovered
1970s – Refining of manufacturing process
1980s – OF technology becomes backbone of long distance telephone networks in NA.
What is optical Fiber?
• An optical fiber is a hair thin cylindrical fiber of glass or any transparent dielectric medium.
• The fiber which are used for optical communication are wave guides made of transparent dielectrics.
• Its function is to guide visible and infrared light over long distances.
Structure of optical fiber
• Core – central tube of very thin size made up of optically transparent dielectric medium and carries the light form transmitter to receiver. The core diameter can vary from about 5um to 100 um.
• Cladding – outer optical material surrounding the core having reflecting index lower than core. It helps to keep the light within the core throughout the phenomena of total internal reflection.
• Buffer Coating – plastic coating that protects the fiber made of silicon rubber. The typical diameter of fiber after coating is 250-300 um.
Working principle
Total Internal Reflection
• When a ray of light travels from a denser to a rarer medium such that the angle of incidence is greater than the critical angle, the ray reflects back into the same medium this phenomena is called total internal reflection. • In the optical fiber the rays undergo repeated total number of reflections until it emerges out of the other