A low power 40 Gbit/s cascaded extension to bit-interleaving optical networks enabling next-generation metro/access connectivity

Optical networks in use today were not designed to accommodate the needs of new technologies such as cloud services and the Internet of Things. Features as flexible bandwidth allocation and low packet-delay variation, which are of crucial importance, are still missing in current metro/access networks. In this paper the solution known as CBI-PON is highlighted. CBI-PON is a cascaded extension of the BiPON protocol offering these features, while lowering the network’s power consumption. A 40 Gbit/s implementation of the electrical part is presented, showing 80× (Repeater) and 6× (End-ONT) power consumption reduction compared to currently available commercial equipment.