Among the transmission media commonly used in computer networks, the fastest transmission rate is "optical fiber". Commonly used network transmission media include twisted pair, coaxial cable and optical fiber. The transmission rates from fast to slow are optical fiber, coaxial cable and twisted pair. Optical fiber has the characteristics of being unaffected by external electromagnetic fields and having unlimited bandwidth, and can realize data transmission of 10,000 gigabits per second.
The operating environment of this tutorial: Windows 7 system, Dell G3 computer.
Among the transmission media commonly used in computer networks, the fastest transmission rate is "optical fiber".
Related recommendations: "Programming Learning"
The network transmission medium is the physical path between the sender and the receiver in the network. It affects the data of the network. Communication has an impact. Commonly used network transmission media include twisted pair, coaxial cable and optical fiber. The transmission rates from fast to slow are optical fiber, coaxial cable and twisted pair.
Optical fiber, also known as optical cable or optical fiber, consists of optical fiber core, glass mesh layer and outer shell that can absorb light. It is a small and flexible transmission medium composed of a group of optical fibers used to propagate light beams. Applying optical principles, the optical transmitter generates a light beam, converts the electrical signal into an optical signal, and then introduces the optical signal into the optical fiber. At the other end, the optical receiver receives the optical signal from the optical fiber and converts it into an electrical signal. Process after decoding. Compared with other transmission media, optical fiber has good electromagnetic insulation performance, small signal attenuation, wide frequency band, fast transmission speed and large transmission distance. It is mainly used for backbone network connections that require long transmission distances and special wiring conditions. It is not affected by external electromagnetic fields and has unlimited bandwidth. It can realize data transmission of 10,000 gigabits per second. It is small in size and light in weight. Data can be transmitted hundreds of kilometers, but it is expensive.
It is divided into single-mode optical fiber and multi-mode optical fiber:
Single-mode optical fiber: Using laser as the light source, there is only one optical path and the transmission distance is long, 20-120km.
Multi-mode optical fiber: illuminated by diodes, low speed and short distance, within 2 kilometers.
Optical fibers need to be connected with ST-type connectors.
If you want to read more related articles, please visitPHP Chinese website! !
The above is the detailed content of What is the fastest transmission medium commonly used in computer networks?. For more information, please follow other related articles on the PHP Chinese website!