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28Open InnovationResilient ICT Research Center The Resilient ICT Research Center is working in two main purposes: the research of basic technology, infrastructure and applications for disaster-resilient ICT, and the promotion of social implementations aimed at maximizing the ben-efits of research and development. In addition to performing research, the laboratories of the Center are also involved in developing social implementations of the results of this research, and the Planning and Collaboration Promotion Oice is actively planning and executing demonstration tests using the results of laboratory research, and is actively involved in external cooperation and local coordination eorts. With the aim of maximizing the benefits of research, we will work on social implementations of the results of research related to disaster resilient ICT.The activities of the Resilient ICT Research Center are as follows. First, we have been steadily promoting research and develop-ment for disaster resilient ICT, and have played a role as a research center. And the other one, we are promoting industry-aca-demia-government collaboration activities relating to disaster resilient ICT; the collabora-tion with external research organizations in-cluding universities and research institutes; forming a network to link industry, govern-ment, and academia (including local public organizations); collecting, accumulating, and exchanging knowledge; transfer of technolo-gy to companies; ascertaining the needs of users; and the council activity. Furthermore, we are promoting the social implementation of R&D results related to disaster resilient ICT by performing demonstration trials using the results, and disaster training performed by regional public bodies.Our research is taking place in two lab-oratories, which are working on the follow-ing three projects:Disaster-Resilient Optical Net-work Technology(a) Resilient optical switching infra-structure technologyTo enable the instantaneous dynamic optical network control, we are conduct-ing the fundamental research and devel-opment of optical network subsystems in-cluding both optical signal monitoring subsystems and control subsystems. In particular, we employ burst mode optical amplifiers to mitigate the power fluctua-tions of the optical signals owing to the dynamic behavior of optical paths along the time axis and wavelength axis espe-cially in the event of a link failure. Specifi-cally, we have made it possible to reconfig-ure the optical network much faster by reducing the time taken to switch the wavelength paths, for instance, reconfig-ure four wavelength lightpaths from 36 seconds (needed by the conventional technique) to 0.2 seconds (Fig.1). This is the first time that the ultra-fast switching of optical paths is experimentally validated.(b) Basic emergency recovery technol-ogy for optical networksWe have been investigating and devel-oping the emergency recovery resources and technologies to achieve the quick and low-cost recovery of optical networks. For example, an emergency disaster-recovery first-aid unit and the corresponding recov-ery schemes are proposed for the recov-ery of Control & Management-plane, and optical Data-plane, as shown in Fig.2. To enable the collaboration between carriers, we have also been investing an approach: “emergency exchange points of carrier collaboration (EPOC)” which avoids the leakage of the carriers’ confidential topol-ogy information. EPOC-based emergency Fig.1 : Principle achievements in exibly optical switching platform technology. Left: High-speed wave-length switching, Right: Optical packet ofoadingResearch and Development