The Laser Communication System Of Large Capacity CO₂--The Detection And Process Technology Of Laser Pulse

This article discussed the total constitute of communication system of large capacity C02 and the basic principle and the key technology of communication system with power-driven ,large capacity ,high speed and long distance. This article emphasisly talked about the two kind of technology, commonly used in laser pulse detection - Floating threshold value and AGC(Automatic gain control) technology.The core of Floating threshold value system is the data sampling technology. We will introduce the key chip - TLC5540 and TLC5615 and utilize MCS51 to control the whole system in the article. It examines the original signal from the HgCdTe sensor and realizes the control of Floating threshold value. The key chip - AD603 and its application in the AGC amplifier also introduced in detail in the article. How to examine and the graphic of the result also introduce at the end of the article. It verifies the accuracy of the circuit through the experiment with the experimental oscillogram. We discusses the knowledge of technology of high sensitivity and raise the experiment plan and the practice data which has important means to the C02 communication system of large capacity.