Fujitsu delivers 1.76-Tbit/sec DWDM system for Crosswave Communications' Tokyo-Nagoya-Osaka Backbone

Fujitsu Limited today announced that it has delivered its FLASHWAVE 7700 DWDM long-haul optical transport system to Crosswave Communications Inc. for use in the company's Tokyo-Nagoya-Osaka backbone network.

Fujitsu's FLASHWAVE 7700 is capable of transmitting 1.76 Tbits/sec over vast distances--without regeneration, says the company--and the installation for Crosswave Communications is the first FLASHWAVE 7700 deployment in Japan.

The FLASHWAVE 7700 is a next-generation DWDM transmission and optical add/drop platform that provides up to 176 channels, each capable of carrying 10 Gbits/sec of traffic. The system uses 88 channels in each of two bands of the transmission spectrum, the C and L bands, using 50-GHz spacing between each channel. The 1.76-Tbits/sec transmission capacity is equivalent to simultaneously distributing MPEG4 coded high-definition video to approximately 34,000 users, say Fujitsu representatives.

Crosswave Communications, with a network linking its data centers in Japan, offers a range of network services, focusing in particular on wide-area LAN and high-speed backbone service. On April 1, the company began a commercial rollout of its new Gigabit Ether Backbone Service. The FLASHWAVE 7700 platform is being used to strengthen the approximately 1,400-km (875-mile) backbone network that links its data centers in Tokyo, Nagoya, and Osaka to handle the expected increase in data traffic.