Tài liệu Đề tài learn about fiber optics optical

Hanoi University of Mining and Geology Faculty of Information Technology Learn about fiber optics Instructor: Msc. Dao Anh Thu Student: Vu Manh Tai StudentID: 1221050370 Class: Computer Network 1 Content 1. 2. 3. 4. 5. Optical fiber classification Fiber optics structure The transmission characteristics Advantages and disadvantages 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 Layer core. Layer reflects light back to the core. Layer protection. 4 Fiber optics structure • The diameter of the core is very little from 5150 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 characteristics • • • • Adapter: 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 connector Fiber optic devices convert to copper 7 Advantages and disadvantages  Advantages • • • • • • Broadband Small size and weight. Low attenuation. Isolated electromagnetic field. The distance between the remote repeater. Reduce the number of iterations, reducing costs. 8 Advantages and 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