Tuileries—philippe-auguste: The first fully engineered high capacity junction line in paris

For many years, the French PTT has devoted great effort for the development of optical fiber systems. Today, several types of applications are planned in the local, urban, or trunk networks. We report here the results of the first junction line, at 0,85 μm, which was installed in August 1980 in Paris. This line consists of a 70-fiber cable pulled over a distance of 7,5 km between two exchange centers, Tuileries and Philippe-Auguste. The bit rate is 34 Mb/s, leading to a potential capacity of 16 800-bidirectional channels.