Fiber optics is a medium for transmitting messages from one end to the other, a glass or plastic fiber that serves as a transmission medium for messages to pass through.
Currently, fiber optic communication materials are mainly made of highly transparent silicon dioxide, which can be made into pure silicon dioxide by chemical vapor deposition (CVD).
Fiber optics can be divided into single mode (Single Mode) fiber and multi-mode (Multiple Mode) fiber.
Single Mode fiber provides only one optical path and is complex to process, but has greater communication capacity and longer transmission distance.
Multi-mode fiber uses multiple optical paths to transmit the same signal, with the speed of transmission controlled by the refraction of light.
The following types of optical fibers are used in computer networks
1. 8.3pm core/125pm shell, single mode.
2, 62.5um core/125um shell, multimode.
3, 5OPm core/125pm shell, multimode.
4, loopm core/140pm shell, multimode.
Expanded Information:
The main reason for the rapid development of fiber optic cable is that it has the following characteristics:
1, the transmission bandwidth is very wide, and the communication capacity is very large.
2, small transmission loss, long relay distance, especially suitable for long-distance transmission.
3, strong resistance to lightning and electromagnetic interference.
4, good confidentiality, not easy to be eavesdropped or intercepted data.
5, small size, light weight.
6, low bit error rate, high transmission reliability.
7, the price is decreasing.
Baidu Encyclopedia - Optical Fiber