Developing a space optical communication system for 3u CubeSats

This project is developing an optical communication payload for 3U CubeSats, designed to operate within their size, weight, and power constraints. The transmitter laser, combining a Distributed Feedback Laser Diode (DFB LD) with an Erbium-Doped Fiber Amplifier (EDFA), achieves a 500 mW output. Our goal is to construct and validate a space optical communication transmitter module for nano-satellites and verify the space-to-ground optical communication downlink. We are developing a ground station system with a 1.2-meter telescope and a calculated link budget of 5.4 dB, expected to achieve a data transmission rate of up to 8 Mbps. The satellite is scheduled for launch in 2026.