Main characteristics of optical fiber transmission

Optical fiber transmission has the advantages of small attenuation, wide frequency band, strong anti-interference, high security, small size and light weight, and has unparalleled advantages in long-distance transmission and special environment.

1, high sensitivity, no electromagnetic noise.

2. Small size, light weight, long service life and low price.

3, insulation, high pressure resistance, high temperature resistance, corrosion resistance, suitable for special environment work.

4, the geometric shape can be adjusted according to the environmental requirements, and the signal transmission is easy.

5. High bandwidth, large communication volume, small attenuation and long transmission distance.

6. Small signal crosstalk and high transmission quality.

7. Highly confidential.

8, easy to lay and carry raw materials.

Extended data:

Principle of optical fiber transmission: The optical transmission system consists of light source, transmission medium and detector. Traditionally, optical pulses represent bit 1, while non-optical pulses represent bit 0. The transmission medium is very fine glass fiber. When the light strikes the detector, an electric pulse is generated. Place a light source at one end of the optical fiber and a detector at the other end. We have a one-way transmission system. It receives electrical signals, converts them into optical pulses and transmits them. Then, the receiving end converts the optical pulse into an electrical signal.

Optical fiber communication has unparalleled advantages. First, its capacity is amazing. A thin optical fiber can transmit tens of thousands of people or even hundreds of millions of calls at the same time, and it can also transmit thousands of TV programs, which is unmatched by other transmission methods. Secondly, optical signals are transmitted through optical fibers, which are not interfered by external electromagnetic fields, are not afraid of humidity, corrosion and pollution, and have strong confidentiality. The loss of optical fiber transmission signal is also very small, only one tenth of that of cable.

Baidu encyclopedia-optical fiber transmission