Optical telecommunications system
AssigneePirelli Cavi e Sistemi S.p.A.
InventorsGiorgio Grasso, Aldo Righetti, Paolo Ottolenghi, Fabio Donati
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Abstract
Optical telecommunications system, comprising: a transmitting station capable of emitting an optical signal having a power of between 18 and 30 dBm; an optical fibre transmission line capable of transmitting the said optical signal, comprising dispersion shifted fibre with a length of between 100 km and 1000 km; an optical receiving station, capable of receiving the said optical signal; which comprises, between the said transmission line and the said optical receiver, a chromatic dispersion compensator. Preferably the said optical fibre transmission line has a length of between 200 and 400 km.
Claims17
An optical telecommunications system comprising:
- a transmitting station for emitting an optical signal having a power of between 18 and 30 dBm;
- an optical fibre transmission line for transmitting the said optical signal, comprising a dispersion shifted fibre with a length of between 100 km and 1000 km;
- an optical receiving station, for receiving the said optical signal;
- and
- a chromatic dispersion compensator positioned between the said transmission line and the said optical receiving station, for imparting a predetermined chromatic dispersion to the said optical signal.
A method of transmitting optical signals, comprising
- generating an optical signal having a power of between 18 and 30 dBm;
- transmitting the said optical signal along a span of dispersion shifted optical fibre with a length of between 100 and 1000 km, causing in the said signal a chromatic dispersion of less than 1500 ps/nm as a result of the said transmission in the said span;
- amplifying the said signal;
- compensating the said chromatic dispersion of the said signal;
- and
- receiving the said signal.
Dependencies are inferred from the claim text.