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Fiber Optics
9
Fiber Optics
Kwestan - Ala - Zina - Eman
MLT Department
Erbil Health and Medical College
Supervise by : Awat Mustafa
Outline
Introduction
- Introduction To Fiber Optics
- History Of Fiber Optics
- Types Of Fiber Optics
- Applications Of Fiber Optics
Introduction To Fiber Optics
Fiber Optics
A glass layer, called cladding, surrounds the glass fiber core. The buffer tube layer protects the cladding, and a jacket layer acts as the final protective layer for the individual strand.
Introduction To Fiber Optics (Cont’d)
A glass layer, called cladding, surrounds the glass fiber core. The buffer tube layer protects the cladding, and a jacket layer acts as the final protective layer for the individual strand
Fiber Optics
(Cont’d)
History of
Fiber Optics
History
1840s: Swiss physicist Daniel Colladon discovered he could shine light along a water pipe. The water carried the light by internal reflection.
1930s
1930s: Heinrich Lamm and Walter Gerlach, tried to use light pipes to make a gastroscope—an instrument for looking inside someone's stomach.
1950s
1950s: In London, England, physicists Narinder Kapany and Harold Hopkins managed to send a simple picture down a light pipe made from thousands of glass fibers
Types of
Fiber Optics
Types
There are two types of fibre optic cables ;
- multimode
- single-mod.
Multi mode
Multimode
Used for shorter distances because larger core opening enables light signals to reflect more.
The larger diameter permits multiple light pulses to be sent through the cable at one time.
More possibility for signal loss or interference.
Uses an LED to create the light pulse.
Single mode
Used for longer distances due to smaller diameter of glass fiber core.
Less possibility of attenuation, which is a reduction in signal strength.
Has a considerably higher bandwidth.
It’s light source is typically a laser.
Single mode
Applications Of
Fiber Optics
Applications
- Telephone Lines: Nowadays, data communication companies implement fiber cables in their telephone lines.
- Medicin: Used in medical devices and integrated into sensors, imaging and invasive surgical systems.
Applications Of Fiber Optic
Applications
- Military Applications: Used because of the extremely high level of data security needed in military and relevant areas.
- Automotive Industry: Used in the lighting and safety features of vehicles. Used in interior and exterior of vehicles lighting.
Conclusion
Fiber Optics has greatly reduced the cost of communication and data transmission as higher bandwidth of data can be carried over a long distance in a far much shorter time than copper-based transmission.