16 P. Batchelor et al./The Implementation of Optical Transparent Transport Networks 1 Introduction to foster the penetration of optics in the network nodes where much of the system costs were It has been recognized that the arrival of ampli®ed concentrated, and multiwavelength optical transmission systems and to prepare the implementation of ALL optical routing technologies will provide the oppor- OPTICAL NETWORKS for the future. tunity to exploit the enormous bandwidth of the optical ®bers already installed in the terrestrial trunk Regarding the network structure, a simplistic case networks. This promoted the very well known concept study scenario was developed by considering one of all optical and transparent networks some years ago national node for each European country, mainly and the related studies in the framework of interna- located in each capital city in Europe and acting as the tional programs such as RACE and ACTS in Europe or gateway for all the European international traf®c for DARPA in the United States. The project described in each participating country. At the beginning, 20 such this paper (Ultra High Capacity Optical Transmission nodes were identi®ed for the so called Pan-European Networks, COST 239) has been undertaken within the all optical network
Photonic Network Communications – Springer Journals
Published: Oct 8, 2004
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