Aiming at the shortage of current power communication mode in terms of stability and security

power optical network unit（ ONU） modules are designed based on ethernet passive optical network（ EPON） system. A modularization method of ONU equipment is adopted to simplify the network structure of power communication

and the compact combination design of the power ONU modules is adopted to reduce the cost. In the hardware part

the design and implementation method of power ONU modules is described in detail

analyze the main control chip

optical transceiver module

data storage module and peripheral circuit; in the software part

the transplantation of operating system and the application program design process are given. Test results show that the power ONU modules meet the requirements of power communication.