Optimisation of dispersion compensating fibres for cabled long-haul applications

Dispersion compensating fibres for dispersion-flattened hybrid transmission lines based on non-dispersion shifted fibres have been experimentally investigated. Average Values obtained from the production of thousands of kilometres of fibres with different dispersions and thereby different compensation length ratios are given. Optimisation of hybrid lines for minimisation of span attenuation and fibre nonlinearity is described.