Laser Communication Test System Based on Ten Gigabit Ethernet

With the development and advancement of space technology, the laser communication has been widely used in global communication system. Laser communication equipment has significant advantages in bandwidth and information capacity, etc. Due to the irreparability of satellite laser communication terminal equipment, it is necessary to test its performance and reliability before deployment. As the laser communication has a high data transmission speed, the test task calls for a system with high-speed interface, large-capacity and high I/O bandwidth storage. In this paper, we design a laser communication test system based on 10 Gigabit Ethernet. The test system communicates with laser communicator via optical fiber based on 10GBase-R standard and the test data is stored in NVMe SSD. To achieve higher performance, all the above functions were implemented by FPGA. The experimental results show that the test system has lower latency than Xilinx Ethernet solution, and that our design has a high I/O bandwidth up to 1.2GBps per channel.