Since the advent of laser and low loss optical fiber in Guangdong mechanical processing plant, optical fiber communication system has risen rapidly with its incomparable advantages in technology and economy, and is popular all over the world. The system uses optical fiber as transmission medium, and uses light as carrier signal to transmit information. The applied optical wave length is 1.0-1.0 μ The whole system consists of electric terminal, optical terminal, optical cable and repeater. Fiber can be divided into SMF, MMF, LMF, PMF and POF; Single mode fiber and multimode fiber are commonly used in Guangdong mechanical processing plant. Multimode fiber transmits multiple light wave modes, while single-mode fiber only transmits one light wave mode. The transmission distance of single-mode fiber is longer than that of multi-mode fiber. At present, the optical signal can be transmitted about 6km in multi-mode fiber and 30km in single-mode fiber. Therefore, the price of single-mode optical equipment is higher than that of multi-mode optical equipment. The practical optical fiber is usually a transmission line composed of multiple optical fibers, reinforced core, protective material and fixed material.
Optical fiber modem can complete the conversion between optical signal and digital signal. Fiber Modem generally has more than one data port to transmit synchronous or asynchronous signals. The communication rate can reach 2Mbps or higher, and the common communication rate of distribution network is synchronous n × 64K or asynchronous less than 19200bps. So it is enough to meet the needs of distribution network communication.
In addition, there is an optical fiber modem with dual loop self-healing function. This function greatly enhances the reliability of communication. So that the communication will not be affected, and at the same time send the corresponding alarm and positioning signal to the master station, so that the maintenance personnel can repair the faulty optical cable in time! Guangdong Machinery Factory is really good, worthy of attention!