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激光通信是把光作为传递信号的载波,通过将话音信号及图像信号调制到光波上,经介质(大气、光缆)传输到对方,再经接收端解调,还原成话音或图像信号而实现通信的。激光通信按其传输介质的不同,可分为:大气通信、光纤通信等。一、大气激光通信大气激光通信是指载有信息的激光在大气中传输而实现的通信。它包括发送和接收两大部分,其原理及通信过程与无线电通信相类似,如图1所示。
Laser communication uses light as a carrier for transmitting signals. By modulating the voice signal and image signal into light waves, the laser light is transmitted to each other via the medium (air and optical cable) and then demodulated by the receiver to be reproduced as voice or video signals of. Laser communication according to the different transmission media, can be divided into: atmospheric communication, optical fiber communication. First, atmospheric laser communication Atmospheric laser communication is the information contained in the laser transmission in the atmosphere to achieve the communication. It includes sending and receiving two major parts, the principle and communication process is similar to radio communications, as shown in Figure 1.