Abstract
The current situation in the submarine fibre optics market is described. The submarine business is suffering from the same malaiseas the rest of the telecommunications industry. Some reasons and present trends are outlined in this paper. Unrepeateredsubmarine systems are not so seriously affected by the downturn as the repeatered sector, and offer fresh opportunities for newsuppliers previously excluded from the submarine market. In this case, collaborations with other companies are a preconditionsince customers expect complete, turnkey projects. Typical applications of unrepeatered systems are presented and theeconomics of unrepeatered versus repeatered systems are compared, showing the benefits of unrepeatered systems. The successof systems based on technologically enabling factors, such as FEC schemes, fibre types, and the compensation of nonlineareffects, are discussed together with future technological developments. Finally, a successful example of the deployment of anunrepeatered submarine system (ARCOS 1) is presented.
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