Abstract:Laser beam technology is used more and more widely, including optical communication technology, laser ranging technology, laser aiming technology, etc. the optical communication technology is the most widely used. In the process of optical communication, it is necessary to face the problem of the alignment between the transmitter and the receiver. Optical communication based on laser beam alignment difficult characteristics, research and design a set of laser beam alignment system based on FPGA, the design of hardware and software in the FPGA chip, high speed, stable and reliable, the characteristics of the short development cycle. The whole system takes FPGA chip as the core, supplemented by operating circuit and adaptive algorithm. The experimental results show that the system meets the requirements of beam alignment.