The application of optical fibres to existing communication systems has been studied on three different levels: an element level, a system level and an experimental level. The results of the first level study led to the primary assumptions of the second, etc. The results of these studies, through June, 1977, have led to the design and installation of two different prototype systems. The first is a 750 m 34 Mbit/s system utilizing a 19 fibre step index cable; the second is a 6 km 140 Mbit/s system utilizing a 6 fibre graded index cable. Übersicht: Die Einbeziehung von optischen Lichtleitfasersystemen in bereits bestehende Nachrichtenübertragungsstrecken wird hinsichtlich der Einzelkomponenten, des Systems selbst und der experimentellen Möglichkeiten untersucht. Diese Ergebnisse gestatten die überschlagsmäßige Dimensionierung einer entsprechenden optischen Nachrichtenstrecke. Für die experimentellen Untersuchungen wurden zwei Übertragungsstrecken realisiert: Eine erste über eine Länge von 750 m mit einer Übertragungskapazität von 34 Mbit/s, bei der 19 Stufenindexfasern verwendet werden, eine zweite mit sechs Kilometer Länge, 140 Mbit/s und sechs Gradientenfasern. Für die Dokumentation: Optische Nachrichtentechnik/Systemeigenschaften/Lichtleitfaserkabel/Kabelspleiße/ experimentelle ÜbertragungsstreckeIn 1971 the goal of investigating the feasibility of integrating optical fibres into existing communication systems was undertaken. This paper reports the results of our more recent work. It is organized into three sections concerned with element level studies, system level studies and experimental level studies.
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