What is the principle of fiber repeaters?
There are more erbium laser repeater is adding rare metal in a fiber, the nearby photon in a state of activation, there is a small amount of light once into the fiber segments, can impact these active light source, the optical signal instantly increased several times, thus the optical signal amplification.
First, the transmission of optical signals is explained. When the transmission of the optical signal in the optical fiber with a longer distance and the signal decreased, when less than a fixed value when the optical receiver at the receiving optical signal can not correctly identify signal encoding, will lead to error, so at a certain distance from the optical fiber transmission, with a fiber optic repeater, the light amplification the signal can support long-distance transmission, similar to the gas station.
Black and white life explained the principle of fiber amplifiers, usually using rare metals to play a role in amplification;However, the optical repeaters will receive weak light signals from the optical fiber and convert them into electrical signals by the optical detector. After the regeneration or amplification, the light source will be excited again and converted into strong optical signals, which will be sent into the optical fiber to continue transmission. In the middle there is a process of converting electrical signals and regenerating them;The purpose of this process is to:In long distance optical fiber communication system, the loss of optical signal of optical cable line is compensated and the distortion of signal and the influence of noise are eliminated
