The RD-XG3-POA series amplifiers support optical power amplification for GPON, XGPON and XGSPON links, compatible with the three protocols. They directly amplify upstream and downstream optical signals without photoelectric conversion, effectively extending transmission distance and expanding the number of accessible subscribers in the network. The device can be deployed in desktop box form, and optional rack mounting brackets are available for installation on 19-inch or 21-inch racks.