Optical transmission system including optical repeaters and regenerators.

摘要

A long haul optical transmission system, e.g. for transoceanic applications, comprises a hybrid arrangement of a small number of optoelectronic regenerators (15) and a larger number of optical amplifiers (14). The arrangement permits the use of low cost fibre and, by using only a small number of regenerators, significantly reduces the system cost in comparison with an all repeatered system. <IMAGE>