High Power Compact Fiber Amplifier Mini Module is a high-stability output erbium-doped fiber amplifier. The core device adopts a high-reliability PUMP laser and adopts unique APC (automatic power control) and ATC (automatic temperature control) circuits, which make the output power highly stable and reliable. The unique optical path design ensures excellent optical path indicators. The highly stable and high-precision MPU (microprocessor) system is used, which is convenient, reliable and intelligent to use, adjust and display.