100-Gb/s per channel optical transport technology development has experienced a long journey from purely
academic interests to commercially viable solutions. In near future, 100-Gb/s channel will be one of the major
building blocks for the next generation transport network. Beyond 100 Gb/s optical channel designs may, however,
experience a paradigm change. So far, almost all commercially available optical channels, with capacity up to 100
Gb/s, are single-optical-carrier ETDM (electrical time domain multiplexing) channels. Optical channels with
capacities beyond 100 Gb/s, however, will most likely be a superchannel with multiple optical carriers based on our
In this paper the history of channel speed development of optical transport networks, from a few MbI/s to beyond
100 GbI/s, is reviewed. A new channel type categorization, which divided various channel designs into only three
basic channel types, has been proposed. Based on the new categorization distinguishable performances of the three
types of channels are analyzed and the future direction of optical channel designs is predicted.
This paper illustrates detailed numerical analysis, lab tests, and field trials of MCI's next generation fiber development process from the years 2000 to 2004. The new Medium Dispersion Fiber (MDF) has dispersion of around 7~8 ps/nm/km, which will satisfy MCI and worldwide next generation transmission fiber technical specifications and requirements at 20 Pb/s*km for "short fat" (20 Tb/s x 1000 km) and "long thin" (6.67 Tb/s x 3000 km) future DWDM and ULH network application and deployment.
This paper highlights advantages of Optical Transmission Network (OTN) standards, explains its benefits in combination with IP networks and discusses potential introduction strategies. Furthermore a practical introduction example is presented.