Optical Packet switching enables the transfer of packet signals in the optical domain on a packet-by-packet basis.
In conventional electronic routers, all input optical packets are converted into electrical signals that are subsequently stored in a memory. The stored signals then undergo switching to reach the intended output ports while being handled as low-speed signals, and finally the switched signals are reassembled into the high-speed packets. This process leads to high power consumption and large latency.
To resolve these issues, we have been undergoing research for the hybrid optoelectronic packet router (HOPR) that aims to optimally combine optical and electrical technologies based on novel optical and optoelectronic devices developed in our labs.
Optical/Optoelectronic/Electronic device technologies for 100-Gbps optical packet
Optical packet processing technologies with high speed operation, low power consumption and low latency
Hybrid optoelectronic packet router technologies enabled by novel router architecture
An optical packet switched network can maximize the efficiency of the link bandwidth utilization through the deployment of statistical multiplexing. The network is also attractive for the reduction of power consumption and latency by adopting flexible traffic engineering on a packet-by-packet basis and novel optical technologies. These advantages are particularly beneficial in the networks with a high variation of traffic. In this regard, we have been researching the technologies necessary for realizing future networks for data centers, cloud computing and metro NW, as well as access aggregation NW and optical mobile NW.