Fpga Network Card And System For Gpon Frames Analysis At Optical Layer

This article is a summary of our participation in a project focused on the development of a programmable FPGA network card for gigabit-capable passive optical networks. The network card is constructed to analyze GPON frames and check the correctness of communication between an optical line terminator and an optical network unit directly in the optical domain. The GPON networks use a specific encapsulation method for Ethernet frames and control messages. Because of the network card operates directly in the optical domain, it is possible to provide real-time analysis of headers of GPON transmission convergence layer. Within this article, a basic schema and functionality of the FPGA network card are described, and proposals for the continuous research and development are presented at the end.