Applications for 100 ethernet and beyond

Internet protocol (IP) data traffic is explosively increasing with the diffusion or broadband access environments such as fiber to the home (FTTH) and asynchronous digital subscriber line (ADSL) which enables video on demand services, video chat, large data downloads, and so on. In Japan, the IP data traffic is roughly doubling each per year, and the number of FTTH users exceeded 12 million in 2008 Q1. To support these huge traffic, the IEEE 802.3ba working group recently started standardization activity on 40/100 GoE LAN interfaces and will finalize it by 2010. In addition, regarding the long-haul transmission, very high speed, large capacity optical transport network (OTN) architectures have been discussed and will be standardized in ITU-T such as Recommendation G.872 and G-700. Corresponding to these situations, physical layer components for 400/100 GE LAN interfaces have been extensively developed. Especially, parallel transmission techniques such as 25 Gb/s times 4 can be adapted for 100 GE, and optical integration should be a key technologies to reduce the cost. Research and development for 100 Gb/s-based serial transport technologies, which are based on coherent detection and wireless technologies are promising for the long-distance transmission, as well as optical integration technologies are important for spreading the 100 Gb/s-based transmission widely. In the presentation. I will review the R&D activities regarding 40/100 GE and 100 Gb/s-based long-distance transmission technologies.