The error ratio peroformance of soliton like transmission over a 68 km distributed erbium fibre link is reported. The transmission link had a net gain of only 2 dB, with remarkably low signal power excursions and a penalty of <1 dB was observed at 40 Gbit/s.
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http://iet.metastore.ingenta.com/content/journals/10.1049/el_19960112
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