This paper proposes and demonstrates an optical network unit (ONU) that is adaptive in both point-to-point (P2P) and point-to-multipoint (P2MP) optical access networks (OANs) based on Gigabit Ethernet. Use of the proposed ONU makes it possible for network operators to reduce their operational expenditure (OPEX) by controlling/managing necessary inventories as well as handling troubles due to ONU mis-connection.
