medium-size national network is optimised using the various techniques, and the results presented in terms of the total number of DWDM systems required and the amount of wavelength-hops (giving an indication toward the number of optical transponders required). Traffic is taken as a mix between unprotected and 1+1 SNCP optical path protected demands. Traffic growth is applied over the 5 year pla...

The trends that lead to the recent development of the IP over DWDM architectures are presented. The need for such architectures arises from the overlapping functionalities provided in the current layered architectures. The issues encountered in such architectures, and the proposed solutions, in the standard committees, to solve them are discussed. The issues that require further research attent...

In this paper we show that the adoption of a duobinary modulation scheme reduces the impact of FWM in a DWDM system. The levels of the FWM products are reduced by around 3 dB which will offer a significant performance benefit in digital systems.

In the modern world of technology, data rates up to 40 Gb/s are becoming a reality and the bandwidth hungry applications such as teleconferencing, telemedicine, IPTV have already begun to make their presence in the commercial market. These bandwidth hungry applications attract the need for optical communications in which the fibers can theoretically provide infinite bandwidth. In order to satis...

A combination of flexible optical time division multiplexing and dense wavelength division multiplexing techniques is deployed for realising a reconfigurable multi-Tbit/s data transport network connecting over 13000 telescope antennas. Both short-range and long-range transport in the 1.3 μm and in the 1.5 μm wavelength range, respectively, are explored. Introduction Very high capacity optical d...

Continued demand for higher bandwidth in data networks along with an industry need for standardized network components has driven the need for 10 Gb/s optical transceivers into the long haul, metro core, and enterprise/storage environments. In response to this demand, the functionality and performance of these modules have increased significantly, while the size, cost, and power consumption hav...