Xem mẫu
- Hanoi University of Mining and
Faculty ofGeology Technology
Information
Learn about fiber
optics
Instructor: Msc. Dao
Anh Thu
1
- Content
1. Optical fiber classification
2. Fiber optics structure
3. The transmission characteristics
4. Advantages and disadvantages
5. Applications
2
- Optical fiber classification
•
Single-mode ( Ø core 2 - 8 µm).
•
Multi-mode continuous extraction (Ø core
50 - 125 µm).
•
Multi-level extraction mode (Ø core >
50 µm).
3
- Fiber optics structure
•
Consists of 3 layers
ü
Layer core.
ü
Layer reflects light back to the core.
ü
Layer protection.
4
- Fiber optics structure
•
The diameter of the core is very little from
5-150 µm.
•
Light in the optical fiber assembly of the
infrared and visible light region.
•
Core layer made of transparent material,
particularly plastic glass.
•
To pass light in the core layer refractive
index of the core layer is greater than the
refractive index of the cladding layer.
5
- The transmission
•
Adapter: characteristics
Optical – Electric.
•
Not affected electro-magnetic interference.
•
Dispersion is the phenomenon of light.
•
Used for transmission of long distance.
telecommunications systems.
6
- The transmission
characteristics
The type of fiber optic Fiber optic devices
connector convert to copper
7
- Advantages and
v disadvantages
Advantages
•
Broadband
•
Small size and weight.
•
Low attenuation.
•
Isolated electromagnetic field.
•
The distance between the remote
repeater.
8
•
- Advantages and
v disadvantages
Disadvantages
•
Difficult pairing
•
The use of a photoelectric conversion
9
- Applications
•
Communication environment suitable for
implementing network services application
integrated with broadband.
•
Transmission distance.
•
Urban Trunk.
•
Local network.
10
- Applications
11
- The End
12
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