Author : 
Nakazawa, M. ; Kimura, Y. ; Suzuki, K. ; Kubota, H. ; Komukai, T. ; Yamada, E. ; Sugawa, T. ; Yoshida, E. ; Yamamoto, T. ; Imai, T. ; Sahara, A. ; Yamauchi, O. ; Umezawa, M.
         
        
            Author_Institution : 
Opt. Soliton Commun. Res. Group, NTT Access Network Syst. Lab., Ibaraki, Japan
         
        
            Abstract : 
Experimental field transmissions of solitons at 20 Gbit/s over 2000 km have been successfully demonstrated using part of the Tokyo metropolitan optical network consisting of conventional dispersion-shifted fibre cables. The soliton pulse width was 10 ps and a polarisation-insensitive MQW electroabsorption modulator was used for demultiplexing. The power penalty at a BER of 1010 was ~3.5 dB