The RFI was created by Stuart Barnes, entrepreneur-in-residence at Atlas Venture; the vendors’ proposals were presented at Lightspeed Europe, Light Reading’s conference in London, last December. Since then, Barnes has analyzed the submissions to cast light on some key issues that carriers are likely to face when they get back to building out their long-haul infrastructures.
The submissions came from the following vendors:
- Ciena Corp. (Nasdaq: CIEN)
- Fujitsu Networks Europe Ltd./Tellium Inc. (Nasdaq: TELM)
- Lucent Technologies Inc. (NYSE: LU)
- Nortel Networks Corp. (NYSE/Toronto: NT)
The fictitious "Euro 1" network contained five nodes in a ring configuration with link distances ranging from 300 to 600 km and traffic requirements evolving from tens of Gbit/s up to hundreds of Gbit/s in the third year of operation. Two nodes were specifically set up as key cross-connection nodes with very high capacity requirements to connect Euro 1 to the rest of a larger pan-European network. In terms of line rates, two very distinct camps arose. Ciena and Fujitsu/Tellium proposed 10-Gbit/s line rates throughout the network to satisfy even the very high capacity requirements in year three -- Ciena using more densely packed wavelengths, Fujitsu/Tellium requiring more fiber to be installed. Lucent and Nortel flew the flag for 40-Gbit/s DWDM, however, with both proposals beginning to make use of the higher line rate in year two. It was a similar story with the add/drop and crossconnect technologies being proposed. Lucent and Nortel presented designs incorporating the latest in all-optical crossconnects at the high-capacity nodes, whereas Ciena and Fujitsu/Tellium were confident that electrical switching was still the most sensible solution.
For more detail, check out the report itself: Long-Haul WDM: RFI Exercise — Craig Williamson, Associate Editor, Light Reading