Techwin C-band polarization maintaining fiber amplifiers adopt integrated all fiber structure design. The unique polarization control technology and advanced polarization maintaining fiber welding technology ensure that the amplifiers can obtain high power and high extinction ratio linear polarization output. Techwin polarization maintaining optical fiber amplifiers are integral Turn-Key system with the microprocessor inside for controlling. With a clear interface and easy control, the LCD on the front panel can give a real-time display of the operating state of the pump current and temperature. The LCD can also offer warning messages.