Network architecture technology for a highly versatile and economical optical access network

Network architecture technology refers to technology which clearly defines the functions and equipment configurations needed for the efficiently const ruction and utilization of the optical access network. This article will ex amine the work that has been undertaken to date to make FTTH a reality, and report on efforts that have been made to develop new network architecture technologies for economic and highly versatile networks that will be able t o flexibly accommodate IP services, etc., in the future.