8/spl times/85.4 Gbit/s WDM field transmission over 421 km SSMF link applying an 85.4 Gbit/s ETDM receiver

We report on 8/spl times/85.4 Gbit/s WDM field transmission over 421 km SSMF link in the DTAG network applying an 85.4 Gbit/s ETDM receiver. Error free operation is achieved for all WDM channels after fibre transmission.