Network Systems Innovation Group (NSI)
The metro/regional network is currently undergoing a dramatic expansion driven by emerging service offerings of triple play (IPTV, VOIP, Data), Ethernet services and interactive services (gaming, video conferencing). The service providers are aggressively deploying ROADMs (Reconfigurable Optical Add/Drop Multiplexers) based optical transport networks to meet the bandwidth demand from these services.
We focus on advanced technologies on optical module, optical node, optical transmission system, and network management for communications. We are currently actively involved in the following topics:
• Photonic network system design
• Photonic network architecture
• Photonic network management
We would like to play a role of laboratory function in North America communication area in collaboration with Fujitsu Laboratories Ltd. in Japan. We also support FNC (Fujitsu Network Communications) business.
Research Themes
1. Photonic network system design
We are conducting development of photonic network system design methods involving recent advanced technologies such as ROADM, and higher bit rate signals of 40Gbps or more. Furthermore we investigate novel system design toward high functional digital signal processing in conjunction with advanced analog transmission/receiving system for future higher performance systems.
2. Photonic network architecture
We are developing multi-degree ROADM node architectures that cost-effectively enable dynamic service provisioning and evolution to mesh networks. In addition, we are also investigating the latest developments in optical module technologies (such as wavelength selective switches, tunable dispersion compensators) to build cost-effective ROADM systems.
3. Photonic network management
We focus on advanced control and management technologies for current and future photonic networks. Study efficient and feasible solutions to achieve integrated control across multiple layers (from IP layer to optical physical layer). We are exploring optimal combinations of centralized management and distributed control to enable seamless interoperability across heterogeneous networks consisting of multi-vendor, multi-service network elements. We are investigating key enabling technologies towards highly-distributed, autonomous and intelligent network management systems for future carrier photonic transport platforms.
