OKI declared that it has developed an adaptive network configuration technology and achieved channel-switching between the existing GE-PON systems and the 10 GE-PON systems.
Using the latest capabilities of optical network units and optical line terminals, a versatile and cost-effective optical access system has been developed for 100-km broadband optical networks.
Driven by the increasing demand for subscription-based optical networks and the need for other related expansions, OKI was offered grants in 2009 by the National Institute of Information and Communications Technology, for initiatives on subscription-based broadband optical network technologies that ensure broadband services without new center office deployment. Supported by NTT, OKI installed optical fiber in the facilities of Nippon Telegraph And Telephone East Corporation. The flexible optical access network in a test bed was demonstrated to simulate a 100 km of total transmission distance for subscription-based broad optical networks.
Adaptive networking fabricates network infrastructure in the form of a cascade or ring. The PON system previously branched by power splitters, now uses centralized control node and passive OHF. It ensures broadband technology with minimal loss due to branching. Switching of WDM and OCDM channel is facilitated through centralized control nodes and the virtual technology is presented in the form of a logical star, free of physical connection of OLT and ONU.
This experiment represents the transmission of WDM and OCDM hybrid optical signals, seamless service provisioning from GE-PON to 10G-EPON and restoration through passive routing.
Furthermore, OKI besides developing multi-channel control and OLT driving control technologies also anticipates constructing virtualized access system technology for virtual PON system by integrating the recent adaptive networking technology.