Superhighway by Photonically and Electronically Enhanced Digital transmission
|Organisations Hosting Experiments
Broadening of Awareness Chains
The main objective of the field experiments in this project is to demonstrate the feasibility of very high bitrate optical transmission systems in the transit network, using the electrical time division multiplexing (ETDM) approach and re-using existing fibre infrastructure.
46.2 km installed standard singlemode fibre loop between Stuttgart and Ludwigsburg in Germany
First feasibility field experiments at 20 Gbit/s and 40 Gbit/s over a 46.2 km installed standard singlemode fibre loop between Stuttgart and Ludwigsburg in Germany have been carried out using the new method of four-level Dispersion Supported Transmission (DST). The 46.2 km installed standard singlemode fibre loop is rented from Deutsche Telekom. Experiments are continuing in 1997. Results already achieved include:
These experiments are carried out on the 1.5 µm wavelength range. It should be noted that these results have been achieved without optical dispersion compensation devices. A second field experiment using the fibre infrastructure in the Lisbon area of the project partner CPRM in Portugal (national host) is planned for 1998 (probably in June, 1998). This will comprise a field experiment on standard singlemode fibre with STM-1 interfaces to application signals. The fibre infrastructure in the Lisbon area of the project partner CPRM in Portugal (national host) can be used for this experiment.
Not specified; primarily a technology trial for high-speed bit transport.
First field experiments (Germany): 1996 and 1997
Final field experiments (Portugal): June, 1998
No accessibility to persons outside the project is planned.
No other field experiments using 20 Gbit/s ETDM are known.
Dr. Berthold Wedding
Alcatel SEL AG
Tel: +49 711 821 32263
Fax: +49 711 821 32457
Alcatel SEL AG, Stuttgart (D)
Companhia Portuguesa Radio Marconi, Lisbon (P)
Deutsche Telekom, Stuttgart (D)