The Key Technology of Ultra-high-Speed Laser Communication Principle Verification System

The satellite platform simulator, OOK system optical communication link modulation/demodulation and data storage, and support for the user terminal simulator are needed at each stage of the inter-satellite laser communication terminal in the development process. In order to simulate the entire inter-satellite laser communication link, we designed and verified a complete set of data transmission procedures to meet the test requirements of different functions of inter-satellite laser communication terminals at various stages. This system realized the transmission and collection of real-time user data. The real-time storage data rate could reach up to 2.4 Gbps, and the sensitivity of the received optical power of the system was verified by the bit error rate test, which could reach −32 dBm. In order to adapt to changes in different space environments, we had set a mode where the user data transmission rate could be switched, and the switching response time was less than 100 us.