Principles And Applications Of Fiber Optic Communication

The principle of optical fiber communication is: at the transmitting end, the transmitted information (such as voice) should first be converted into an electrical signal, and then modulated onto the laser beam sent by the laser, so that the intensity of light changes with the amplitude (frequency) of the electrical signal, and sent out through the optical fiber; At the receiving end, the detector converts the optical signal into an electrical signal, which is then demodulated to recover the original information

With the increasing speed of information technology transmission, fiber optic technology has received widespread attention and application. In multi microcomputer elevator systems, the application of optical fibers fully meets the requirements of correct, reliable, high-speed transmission and processing of a large amount of data communication. The application of fiber optic technology in elevators greatly improves the response speed of the entire control system and significantly enhances the parallel group control performance of the elevator system. The fiber optic communication device used in elevators mainly consists of a light source, a photoelectric receiver, and optical fibers.