Research On The Control Technology In Space Laser Communication Transmission System

With rapid development of laser technology and optoelectronic devices, as well as people’s communication distance, communication quality requirements continue to increase, optical communication technology, with its unique advantages, has been the development of faster and faster. The feasibility of space laser communications technology has been resolved, space laser system control technology has matured.This thesis research space optical communications system in the launch control technology, the main is about beacon optical and communication optical control technology of the semiconductor laser. Analysis of the spatial optical communication systems affect the output power of transmitter current, temperature and other factors, and discusses the relationship between the output power and the factors. According to the control technology requirements of launch space optical communication system, designed to meet the relevant technical requirements of the beacon optical control circuit and communication optical control circuit. The use of numerical control technology, microprocessor based on the total control of the host computer to send commands to microprocessor control the amount of internal control algorithm, the digital potentiometer to control the beacon of light power, control communication power by the optical fiber amplifier, the system can be adjusted transmit power to ensure that the stability of the launch system, the system with a simple, high control precision, stable and so on. The experiment, the system provides the basic technical requirements to achieve.